I went to local feed stores for red and white.

LDS

I've bought 26 pound buckets of Augason Farms from walmart.com and also sacks from Great River Organic milling on Amazon/eBay (I think).   Both have been fine, but I think the availability and pricing is still abnormal from the COVID circus.   I've paid as little as $14 delivered for the walmart wheat.  I keep hard white, red, and soft white on hand.

Typically, you can adapt any recipe to whole wheat.  If the recipe calls for all purpose you'll need a little more water.  Sometimes you'll also need to add wheat gluten.  Search the interwebz for more tips on converting recipes.  

This is my favorite sandwhich bread recipe:

https://www.browneyedbaker.com/whole-wheat-sandwich-bread-recipe/

I've used home milled wheat with gluten added for the bread flour without an issue.  It will need a touch extra water.

this guy knows how to make bread.

We make a loaf more or less weekly.

This.

And they have Hard Red in stock.  Great people to buy from; heartily approve.

https://store.churchofjesuschrist.org/usa/en/food-storage-3074457345616678849-1

Your link is forked.

This guy?

https://wholegrainscouncil.org/find-whole-grains/mail-order-grain-sources

We buy ours from azure standard. If they have a drop near you it’s a great place for bulk foods.

Closest LDS

Those mills are great. I highly recommend the spare parts kit, power bar, Counter Clamp and the hopper extension …. You really want the power bar since you will be the one running it....