Well there really is no way to minimalize this subject, the best advice I can give you is just listen to the style alot- and try things.
It's a very free-form oriented style, the possibilities are endless...
I was into trad. jazz along time too before I turned to fusion and progressive-jazz, it's the best kind of background.
Chord sequences are very much jazz oriented, maybe a bit more extreme at times.
Instrumentation tends to be a mixture of electric and accoustic, but basically you can use anything you like from a trad. contrabass to steel drums and strange synths, try to create your own sound system that you feel good about.
One of the most important elements that you didn't mention, is rhythmics.
Explore different rhythms for the same melodic ideas, try odd-meter, or uneven division of straight-meter.
If you like, you can check out my fusion band here:
MySpace.com - Unyson da Band - Zichron Ya?aqov / Tel-Aviv - Fusion / Funk / Jazz - www.myspace.com/unysonband
Hope I've been of any help
Omri.