I have a 17 year old, he is 6'2'' 160#, currently he is riding a 2002 rmk 700 and he rides real good. i have a chance to buy a 2007 600 h.o. 155 it has a bikeman pipe other than that it is stock. i want a 700 rmk on the iq chassis but cant find one very close, will this 600 be big enough