at 6 2 and my guess 90 plus kg's i think the RM100 is a bit small for you, and the TF125

as said above, a KDX250 or RMX250 might be good, a 125 MX bike, RM. CR, KX or YZ125,
KDX200 would be good as well, my old man is 6 foot and 105kg, and still loves his one,

if you want to stay four stroke, then a KLX300, XR250, might be the go, both a bit lighter than the DR350