I was thinking the .15 as it only weighs 6.8oz w muffler vs the .28 at 10.8 oz. I plan on cutting a channel out of the fuse between the vertical stabs and epoxying some birch ply for the motor mount. I have a 2oz tank that I am planning on mounting in the stock esc location and by mounting the RX batt and throttle servo in the forward part of the stock battery location I'm hoping the CG won't be too far aft. I know from experience the stryker will fly fine missing the whole nose cone and factory weight. I'm going to fabricate a balsa nose cone/ firewall that the nose gear will be mounted on. if I keep the main gear close the the CG they shouldn't have to much effect on ballast. as far as speed goes, if I can break 100 MPH I'll be
especially after I smoke my buddies electric Fun jet