So I was having a re-arrange of some kit boxes and found these.

They were spares for a drone that I built, the motors are outrunners and I still have a battery pack as well.
Sooo methinks hard chine hull
, possibly mtb et al but if so what size? I do have 6 more motors plus 3 more esc's so could do a triple prop jobby!!!! 
Would they be good enough? What do my esteemed learned colleagues think?
I await with interest 