What are the average peices for the average 14 year old piano player?
Depends on how you define "average" . Evgeny Kissin was playing the Chopin e minor Concerto at age 11, better than most people ever will at any age.
Your repertoire is very good for your age, indicating a pre-professional ability, as others have noted. What concerns me is the amount of time you've acheived this in, you've grown very quickly, so to speak. Too much too soon? No way to know with hearing/seeing you play these pieces. Also, is your teacher pushing you? Was piano your idea, or someone elses?Ask yourself the following questions...
1. AM I PLAYING THESE PIECES ACCURATELY?
Record yourself, then listen to some recordings by professional pianists, and compare. Be honest with yourself .
2. ARE THESE PIECES TOO HARD FOR ME? AM I COMFORTABLE PLAYING THEM?
If you're comfortable, great! If not, drop down a level; you don't want to program bad habits into your technique, which can happen if you are struggling or "trying" to do something, instead of just doing it.
3. AM I AS GOOD AS MY PEERS?
Remember, be honest with yourself. You know...
If you are isolated or the best young pianist where you are, you might consider going to a summer piano program or camp, to see and hear how other kids are doing. You're in the Southwest, there's Idlewild (sp?) in Southern California, and Northern Arizona University Summer Music Camp in Flagstaff. But apply now, these places have deadlines.
Hope this helps...