I've been going back and forth deciding on whether to start playing tournaments again, after some thought I've decided to go for it. The last USTA tournament I played was about 4 years ago but in the juniors mostly level 1 or 2(novices and challengers). I'm thinking about playing in 3.5 tournaments, what should I expect? 4.0s playing in the 3.5s? below 3.5s playing in 3.5s?