Where the servos are concerned, yes, the 3153s are a bolt-in job with no mods, but they're a fair bit more expensive than the Hitecs- you ought to think the 3153MG.
if i understand what you said 3153s are more expensive than the 65mg. Actually they are 1,00/unit more than the 65's.
Would the stock setup (motor & esc) be insufficient for my scale needs ? I would not perform any 3D at least for the time i still don't have the slightest idea of how to fly it at all.
As for the parts that i ll brake i should stock we have
1. Main blades 325 Align Pro and...????? there should be more things to brake when crash. I am waiting to read them here.
For the motor, i ll stay with the stock for the time being.