You cant go wrong with that. Nice plane and a decent set-up. That should fly fine indoors. Remember when you build it..Weight is KEY, especially for indoor flight.

Ive got a 4.5oz shocky superstar that is a DREAM to fly.

When you get your BP21, take a dremel and chop the shaft down. Then order a propsaver, and put that on the front. It will save a little weight and you wont have that big dangerous post sticking out the front of your airplane. Ive got three of those motors and they work great. Just a tad heavier than a Axi.

Let us know what you think when you get it.

The Yak flys real nice. And hovers real good.