Many riders have done so. Last year, Rob took his full sus up to Cameron Highlands.
Choose 1.2 slicks for least resistance and build up your endurance and toughen up your butt leather with PCC Sunday and nite rides. The fitter u r, the more enjoyable is the ride.
I rode up to Penang from KL in IS97 ( i think) on a mtb in 2 days. wasn't fit so I suffered; but it can be done.
Cheers
Don