At the moment you have to stick to your best game, if you believe no limit is then definitely play that, hopefully when you have a larger
bankroll you can try to get good at other forms, but for now you really should stick to your best game, and even stick to your best game (cash, sngs or mtts) although i would not recommend mtts with a small bankroll, if that is what you are best at that is probably what you say. if you loose your roll from the freeroll win dont feel to disheartened, because often enough that is variance.. if you win or lose you should still review your sessions.