Damn man u ask for too much!!.... thats like the ultimate mtb.... but man sincerely i dont think that a 29er will do a lot.... i have a 24" without jackshaft and i just love how much more responsive is than a 26". maybe a 29er with jackshaft will make it... but i think too much of a buff, i prefer small and compact 24", and i dont think you will find a 29er bike full suspension with space for a motor.... btw the repairs and parts of a 29er are a lot more expensive!! soo u should do 2 things for solving that....
*Learn to weld and make ur own frame (im about to do that... and its total bad-ass)
*Cry
im plaing to build a motorized bicycle with jackshaft, hydraulic disc brakes, full suspension, 26" front wheel and 24" rear wheel.... most motorcycles have different tires.
Good luck lolz