Chipp is a good choice, I like him
Learn more characters... For example, I learned 8 characters (Ky, Sol, Order Sol, Eddy, Johnnya, Baiken, Chipp, Testament...) and I'm very, very good with them.. I still main just Chipp, Ky and Testament. It's fun to learn as much as you can. An then you can also know what to expect when you fight against them
I would like to learn I-no, since she is, in my opinion, very hard to learn (Chemical love FRC air dash , and she doesnt have an ordinary dash). Like shezmu said, she can improve execution skills since she has more complicated motions...