RE: electrified shrike??
Try this ... not sure if its too big for the Shrike but I ran this on 5S and its great. DualSky 4260-5 680KV. Was turning a 12x10 and hauling my SkyRaider Mach II like no one's business. I think a better prop on that motor with 5S is a 10x10. You can expect about 10,000 RPM @ 50A. Or else the DS 4250-6 840KV with an 8x8 and expect 13,000 RPM @ 45A. The DualSky motorcalc is pretty accurate. That sort of set up will get you close to 100 mph.