thats easy:
1) find a Thai trainer who has plenty of pro fights under his belt, since you arent Thai and havent actually had any professional Muay Thai fights
2) steadily undermine the reputation of the gym you are currently at with false reports (staph infections and fake calls to 911 about mass injuries in the gym are a good start)
3) covertly recruit students from the gym you are leaving, so you have an established income base from the beginning when you open your gym. helps pay the bills in the initial months.
4) open up your own gym and add one extra letter to it to play off the name of the older, established gym while pulling as many students you can when you leave. for example, if the original gym was XPQ, name your gym XPQY.
5) ???
6) profit
7) karma is a bitch
Disclaimer: this is a hypothetical situation and does not apply to any gym(s) in the Los Angeles area. any resemblance to real life gyms/Muay Thai schools is purely coincidental.