So.... let's say I need an engine to power a plane where a DA-50 just might not cut it. Probably looking at 17 pounds or less ready to fly minus fuel, but a fairly large round cowl. I'm thinking that swinging a 23" prop very strongly, or swinging a 24" prop will be necessary just due to the size of the cowl. This will be an aerobatic machine so weight is a factor. I've read a little bit about the Evolution 58 and the Brillelli 366 engines; are there any other engines I should be looking at? Thanks!