Yeah, having at least 5 would be optimal, considering how it changes between 3 on 3 and 5 on 5. The battles are going to be text based over PM to save space in the thread, then put in the main RP thread with spoiler tags.
It was good, the only real issue is that your character only has two Pokemon at this point. It would be better if you started with at least 5, or else you're going to get absolutely creamed during the battles. And also depending on how many sign-ups I get, I can't guarantee that you'll be accepted, but you probably will be, I just can't say so 100% for now.