Oh man I'm jealous. Tristar is prestigious. Have you seen Firas yet? Btw you are lucky that your wife is so supportive. It is great anger management. Martial Arts give you a sense of calm.
I've seen GSP, Firas (he teach some classes accessible to everyone). I follow mostly Sandro (the muaythai - Dutch kickboxing) coach, he trains GSP and other champs/fighters.
One of my previous muaythai gym coach is also at Tristar (that's cool).
It's a great gym with friendly people of all backgrounds (shady to superstar).
Personally not a fan of BJJ, I would prefer to do Judo or wrestling. But at Tristar they NOGI BJJ is mostly oriented to wrestling.
I've seen that my AikiJutitsu gives me a better stand-up grappling game than their BJJ students and I can hold myself on the ground..but I got a LONG way to go. Also, BJJ is sooo cardio intensive I gaz out too fast.
I am 203 pounds of muscle lol.
No martial Arts will make you "street efficient" per say (street fighting) but it will surely give you tips on how to hold yourself.
Thats the issue about Martial Arts (fake ones especially), they can teach you false confidence. Traditional Martial Arts get bad press due to phony teachers /Mma marketing/watereddown style to attract masses.. But true I would prefer to know MMA in the street than JeetKunDo/BJJ/Karate/kung fu etc.. Why? Because MMA is competition oriented with "no flash" .
Tristar gives a lot of emphasis on light sparring and security (they want you to have fun and come back). They do have a "MMA" is better mentality but no "clique or my club better than yours stuff" . It's all pure logic and fun.
Martial Arts should be mandatory now for boys especially to help them deal get in shape, learn progress.
Why I got back? It's fun, it's good learning, good self-improvement, good boy club.
Why Martial art is "weird" ? Because we live in a safe society, the collective find that since we in peace we don't need "fighting tools".
OP and others, you might like Tristar/Firas online podcast on YouTube (they go from FakeBJJ to Karate used to own Muaythai in Thailand to conditioning for fights to concussion to GSP futur to dealing with burnout etc.. They have great podcast of information)