I have arranged the to hog hunt this spring in south Texas. I have no NV and have not made the decision about what to do. I might just use red/green lights, rent, borrow if possible or invest which i really dont want to do.

Aside from the hog hunt i will be spending the summer 6 months in Montana. I spend a lot of time camping, fishing, shooting riding the landless public land up there. I realized that if i owned NV i could spend the evenings coyote hunting. I dont know much about coyote hunting but imagine i might be taking shots at longer range than the hogs. Or do you call them in to within a 100 yards? But i dont know that. I dont know if range effects NV choices.  What would be the basic setup for coyote that i could use with my 6.5 Grendel?

If you want something weapon mounted, a thermal should be your go to.  Assuming a fairly static position.  

If you want to be able to see in the night (navigation) , NV is the better choice.  

A budget helps here.

Basic set up for the rifle you have - a 640 res thermal, such as a Pulsar that takes standard scope rings.  

Either way, thermal is likely to be best for you.  Buy 1 good thing instead of two cheaper things (cheap, low rez therm and gen 1 nv for example)

How are you going to hunt the hogs?  Blind, vehicle, or on foot?  Guided?  Alone or with a group?

How about a Sionyx Aurora sport, mounted to a cheap bump helmet plus a cheap norotos knockoff mount, and a streamlight virII on the gun for the IR laser?  Maybe a fandyfire IR illuminator too. About $800-850 total

I am not trying to be intentionally vague but i really dont know any of this yet. I am going to talk with the property owner as it all gets closer and see what he recommends. He knows the property and has gone after them a few times.

I would imagine we could at least be based from a vehicle to get from area to area. I have a well built Land Cruiser that should be capable of getting around the ranch. I would love to shoot from the truck but i dont know if that is how it works. I enjoy the using the Cruiser as a tool in my adventures so shooting a hog from the roof or tail gait would just be a fun experience. But also I enjoy hiking and stalking as well so i dont mind walking but i know that changes gear requirements. Like i said I will be talking with the property owner as it get closer. I would like for him to hunt with us but i dont know his plans. Our group size would be as small as just me and my wife or up to four of us.

Budge, LOL. I would like avoid going down the NV rabbit hole at all. I have avoided it because i thought get anything workable i needed to spend at least $5000-10,000. But then I have seen some cheap scopes for $500 and it got me thinking. I dont like buying crap. So if i need to spend into the $3000+ range then i will just wait until i can do that. But if i can get a workable system for half that then i might start watching the EE or planning.  Just trying to learn what is needed.

I might also just treat the hog hunt as a learning experience and see how it goes. Then this summer try just hunting coyotes at dusk and dawn. That might tell me is I want to get deeper into it with NV.

The Hogster line of scopes from Bering Optics is a good beginning choice.  It isnt going to be a 640 res 12 core, unless they have something new and whiz bang, but they have good stuff.  

As far as NV, expect to pay 3k~ for a pvs14.   Not adding in costs of mounting system, helmet etc.  

My .02, if it was me and I had 3k to spend, I’d invest in a thermal scope since most of your work is from a fixed position, it is a wiser purchase.

Eta- you can also rent units from some vendors.

The hogster lineup is pretty solid advice as stated above. Range of shots will also help decide a scope close shots Id get the hogster 25 further shots id get the super hogster.

 
Number 3 on the thermal, and Hogster line. There's a Super Hogster in the EE Right now. I think they were asking $2800.  
 
I run a Bering Super Hogster scope, and a Bering Phenom scanner. I got them both used and love them.

I will probably get beat up for this but a good way to get into it would be to get an ATN Xsight 4K Pro or a sight mark 4k, and a thermal scanner.   This is one of my set ups.   Have not hunted a ton with it but it works.   It also allows you get both for the smallest investment so you can start to see how you like stuff, how things work, and what you might like to spend some money on.

When you know what your needs are, send me a message as I have product tested a lot of options as a product specialist for Night Goggles. I hunt coyotes in ND, so there will be some similarities to MT. We can talk on the phone as it is so much easier to dig into the needs, terrain, preference, budget etc when talking on the phone.

I just got my NV setup about this time last year, and finally tonight got a chance to take it on coyote hunt.

It's about as entry level as it can get, while still being effective.

I've got a Sightmark Wraith 2-16x, and a pvs 14 with Omni IV tube.

My plan for it's use worked great. I scanned with the 14, so I wasn't looking through the scope the whole time draining batteries, and I could maintain a higher level of situational awareness. Then once I seen the coyotes come into the field about 500yds out, I turned on the scope and the included supplemental IR light, and continued to watch them. Once they were within 200yds, I flipped up the 14 and watched them through the scope.

Other one got away before I could get off a shot, but it was my first NV kill, and my 5yo son's first coyote hunt (he braved the 17° weather and didn't fuss a bit). He was sleeping when I shot, but was pumped up once he found out we got one!

Overall, it's a pretty good setup that worked great, and I wouldn't hesitate to recommend. Now I'm working on saving up for a second 14 or a decent pvs7 for my new hunting buddy to wear while we're out.

I live/hunt in South Texas.
Easiest/cheapest setup you need is a scope and a varmint light.
Red seems to work better than green. (for me)