Another MT gym Recommendation req in BKK

So I have a few years of BJJ, boxing as a youth, and just started MT over in the states at a local gym. Local fighters come out of it, and the boxing instruction is pretty high level. Just started and the stance/kicking is completely foreign to me. I can throw basic combos decently and took to the sweep well from BJJ and what little judo i know. So although im just starting im coming from something other than a blank martial arts slate. Going to BKK in late may for two weeks, and want to spend as much time as I can at a gym within walking distance.

Read everything about the big name gyms, and kind of settled on FA Group because I feel more comfortable in the clinch than anything else right now and know the plum and breaking posture. However Im really wondering if I could keep up there even with great cardio. 45 min of grappling is insane. Maybe just wondering if I should look toward something different if its unlikely I will have the bare minimum skills to even benefit from training there. I guess same logic goes for PK senchai and the like.

Also, Im trying to stay 20 minutes or less from the big stadiums as I plan to attend fights almost nightly if I can. Dont care about night life either or shopping etc.