Back in the 70's a popular teaching technique was the 'pointer system' where the root was played with your left pointer finger and the 3rd of the chord above and the 5th below. Try this with a 'C' only and build all your other chords around that center. I think you'll find that it's pretty easy to form most of the chords you will need without too much movement.
I agree with Scott that it would be best to practice some common chord progressions. Also, look at your music and see what key signatures you use most often and then concentrate your practice in those keys. Practice, practice, practice.