Slight quibble: you'd probably still want variable pitch props. Variable pitch props give you a lot of options for noise, speed, efficiency, etc that I wouldn't

Slight quibble: you'd probably still want variable pitch props. Variable pitch props give you a lot of options for noise, speed, efficiency, etc that I wouldn't want to give up just because I have a different power plant. They're also extremely useful for engine-outs (you can feather them which reduces drag significantly) and for landing (you can reverse them which helps which reduces load on your brakes and lets you do questionable things if you need to get into a small strip.)