I have a CM36 4600kv in mine and its great. It stays cool unless and makes heaps of power. If you really want 4 pole the CC 1410 (about $100) or a real 1409 ($159) would be the way to go. Yea its gonna be overpowered, but its better to have more power then you need rather than not have enough. Just my 2 cents.
none of the other motors mentioned are 4 pole. The 1410 is your best bet. With a matching Castle Creations speed control you can adjust it to not seem overpowered.
The lehner basic xl motors are fantastic motors, but they are 2 pole. A lehner basic xl would also be an excellent choice.
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It's "Dr. _paralyzed_" actually. Not like with a PhD, but Doctor like in Dr. Pepper.