I've cartwheeled mine and the wing joint held up fine.

I don't think it came with wheels, I got the GP foam ones (I forget the size, its whatever tower recommended). On asphalt, they're pretty bouncy as would be expected.

I have an 8 ounce tank and fly with a 46FX. The 10 should be just fine, though there won't be room to pad it.

I've had bad luck with some of the metal fasteners that came with it...I managed to shear off one of the screw heads using only moderate hand force.

4 servos. You might be able to mod it for 2 wing servos but in agreement with everyone else, it flys fine on 1, and flaps will only make it float more.

Also, don't know how yours will turn out, but I ended up putting the battery aft of the wing saddle in a "custom" balsa mount with some velcro to balance the plane. No tail weight needed!