Reply to Harmonic CueJump Mapping (for m-audio Oxygen 8)

If the title doesn't explain the idear well enough it is to make the notes to trigger cuejump1 and a each a different value on the key knob. I'm having a bit of trouble though.

1. An easy solveble problem is how much i have to change the key to go one note up. Hopefully someone knows. ( I know this is different from song to song but just in general)

2. A problem that have giving me headaches the last week or two:
When I press and hold a note I want it to cueplay from hotcue1 with a specific value on the key knob. What the problem is, is I want it to change key when I press a second note but not stop the track or jump back to hotcue1.

I've tried different modifiers but it's quite complicated because the first touch of any note have to be hotcue1 but any second note hit has to only change the key.

I also tried with the play/pause modifier but could't get it to work.

Any ideas?