You will be fine. I purchased a 7C a few months after I started flying and found out it doesn't have all the things I need. I can however
make the mix you need. but you would think I could mix dual elevator servos and I can't. I am witing for the 10C to be in stick at tower
and I will be purchasing one of them for next years pattern season.

I noticed you live in VT. are you flying the competition in Hudson NH, on the 12th? I fly in District 1 also (sportsman for the remainder of this season)
I can't make that contest but hope to see you at some next year. You will learn more about aerobatic flying at 1 pattern contest than you could in years
of sport flying. Keep your ears open and ask the judges to comment on your flights, try to find a caller who flys the intermediate class as, as he is only
one step up from sportsman and should remember the sequence.

Again good luck and don't worry about mixes, there will be enough stress without them.