Hi Ted
1.At the end of the day, it's a matter of personal choice. You might check through your existing One Touch settings and make a note of any pairings (and balance settings) of R1 & R2 that suits your style of playing. Then pair up similar types of sound from your 'new' sounds. Also have a look at R1 & R2 settings in any commercial disks you might have.
2. By the way, did you have any success with the notation package I e-mailed you about?