I need to get out of the air conditioned indoor ranges and do something a little more realistic.  I looked up a list of tactical courses being held at the county shooting sports park and found out that "Ready Tactical" is hosting a class next week.  LINK
I don't know anything about Ready Tactical  -  anyone local shoot with them?  Are they good to go?

OP, air conditioned indoor ranges serve a purpose. People use 'em to sight in ,qualify,blow off steam ad infinitum. I would try shooting outdoors in the many places around vegas to shoot.  I take tennis balls, bowling pins on tables and steel targets. I like reactive targets instead of paper. There are three gun matches,subgun matches, IDPA, night matches that you could attend and spend the money you would have spent on a class for ammo.
 I am not saying don't take the class, but with very little effort you can improve your shooting skills by attending matches and finding some like minded shooting buddies and practice. YMMV,Ronnie

I really do need to get into competition.  I just don't want to wake up 18 months down the road and find myself the owner of some crazy $$$ race gun that needs a permanent gunsmith.    

I haven't done any desert shooting yet.  I've seen guys off in the "trenches" on the way to Mt. Charleston.  I've also heard first-hand horror stories about complete knuckle heads drinking & shooting propane tanks.     I like you're idea of shooting tennis balls - that's a target I haven't thought of.  

I can shoot a decent bulls eye and can draw from concealment & put three rounds into a target at 21'.  ....but I'd like to be better.  (who doesn't?)  
For years I used to instruct drivers at Porsche club events.  When I got started everyone wanted to run up through the student run groups as fast as they could and "go solo".  I was never in that kind of a hurry.  I liked having an instructor in the car who could coach me and help shave 1/2 seconds here and there from my lap times.  
I've taken that same attitude towards firearms training.  I can go "solo" but who's going to push me to the next level?   I'd like the structure & coaching you get in firearms classes.   When they go around the class and ask students to introduce themselves and explain why they are here - I always reply "I'm here because I want to suck less"

American shooters still hosts matches at night.
They have a multi-gun setup going on this Thursday night.
Isn't super serious, no racegun needed.  Just gets you shooting and lets you push yourself and at the same time a good opportunity to meet like-minded shooters.