Columbo...

There ya go. You're going in the right direction.

If you need a pump...so be it. (I am just averse to added complexity if it's possible to avoid it)

It can be VERY revealing to hold your model vertical and run through the rpm range slowly. A motor
that is otherswise a real sweetheart can suddenly have all sorts of problems.

The hover attitude is a worst case scenario for the motor and it's fuel system.

Good Luck with it!