Hi,
I have performed Mozart no 17 with chamber orchestra. It is one of my very favorite concertos! Great choice.
I would be cautious about trying to play this very much with CD ("Music Minus One" is what you want to look for). It's OK just to hear the contrast between you and the orchestra and to hear your entrances. Also good to practice keeping going if you slip. But the tempos are usually not the ones you want, so I would use this only for these specific purposes.
Most important points about this concerto, I think:
Smooth, beautiful phrasing--always should be flowing, at the same time transparent and sparkling--think "air" between notes in fast runs. Of course, evenness and clarity are all-important. (Listen closely to yourself and practice runs slowly until you can play them evenly.)
NEVER too delicate or precious! If Mozart says forte, he means it. Big chords are big! Just don't get so weighty it sounds like Beethoven, or so Rubato it sounds like Rach.
The second movement is a prayer.
Let yourself go totally in third movement! This is Mozart at his most humorous. Have FUN!!!
I had posted this, and will try to attach my recording here (I made some mistakes, this is a live recording):
https://www.pianostreet.com/smf/index.php/topic,20503.0.htmlTeresa