u gemuk haha. i know because i also gemuk 

but TS, instead of getting naza blade 650, better you top up abit more to 16k to buy kawasaki er6f second hand or er6n if you want a naked bike.

i myself ride a ninja 250, it's enough for daily commuting, as i don't speed and always follow speed limit. so far i only achieved 180 on that bike (ran out of straights) but 150 is no problem.

but the problem with riding a ninja 250 vs a kapchai is, you tapao or buy anything also need to bring along a backpack