Congrats! Sounds like your having fun.
I agree with John regarding when to put the landing gear down. I also do three to four Gumps however, I make it a point to always put my gear down five miles out. I do this not to slow the plane down but within five miles a lot of different things can happen to distract you and cause you to make the error of gear up landing. There is an old saying regarding retractable gear planes. That is, If it hasn't happened...it will! Beat the odds and put the gear down early.
Good Luck
Jerry N34EC