im 5'11 260...just remember,10thplanet is more then just rubber guard and twister....you have the basics of bjj and the 10th planet system has many sweeps and submissions that us big guys can do.
to be honest while the system eddie has created is great...the main reason i train at a 10th planet school is the comradery, and teamenship,(have not found this as much in other schools) plus while it seems there is a lack of big guys to roll with i find the smaller guys use alot more techniqe and it has sharpened my skills better then me trying to out muscle some guy my size