Thanks for the info. I will grab a 12x4 as soon as my hobby shop can order one in.

Will the 11x5 be ok as far as engine load goes?

Don't want to over-rev the engine and kick a leg out of bed or anything stupid. I wont be flying at full throttle, but tuning at full throttle could cause hassles?

Want to go out this weekend and get a good days learning in. And the hobby shop only has monstrous 12x6+ sized props.

On a side note I cant wait to get my Dave Brown fuel pump and Great Planes filling can setup. Filling the tank with a squeeze bottle is no fun at all.