big bore kit Vs new bike

Heres my dilemma I got my baghira at Eastcoastatv.com for a big bore kit head job corrilo rods 35mm carbs and some trick powder coating ...about $3,300 + 1,200= $4500 worth of work to a 5k bike...or should I just get this trick TM for 11k fly out of the box ....
http://www.tmracing-usa.com/smr530BD.html