Imac Buff, I have the same combo you are building and I just thought I would tell you, that I just tried the apc 17-6 prop and really like it. I had been using the apc 16-8 but it just wouldn't pull out of a hover very well with the 16-8, But its not a problem with the 17-6! I will now be able to hover a lot lower than before because I can pull out, instead of leveling off and flying out. Just thought I would let you know my experience. Happy flying, its a great plane.