Many people get caught up in the HP thing, which is usually developed with a small prop at high RPM.

Don't underestimate your Enya.

If you run the Max .25 you might consider a 9x4 or so prop. An 8x4 is too small for it. BTW, a Max .25 is a strong runner, especially considering it's not schnuerle.

These are only opinions. Good luck with it.

George