The 13x6APC is a good all around prop for your plane/engine combo. If you want to do a lot of hovering the the 13x4W apc is a little better. Either prop will work for break in. Just be sure to break it in at a very rich setting. the first two tanks should be 2/3 throttle @ 4,000 to 5,000 RPM. Then lean it out a little at a time.Not peaking the rpm for 10 tanks or so. Then to fly peak it out and richen it 300-400 RPM. If you havn't done this before see if someone can help you. It would be a shame to ruin a new engine.

David