Great potential if set up properly. The locals love their MMA and now's a great time for something a bit different in Qatar. Good sized ex-pat population, who'd also be good clients without a doubt.
I work for a 100% Qatari owned, British run company, specializing in setting up new companies in Qatar and becoming their 51% partner. We'd be happy to talk you through the intricacies of setting up and what you need to expect. For any advice, feel free to get in touch.(I'll PM more details)