I have an almost new LA 40 and it works fine with a 10 x 5 or a 9 x 6. And I consider it very underpower for your strega. The battery that you should use could be a 4.8 V in any range between 700 and 1200 mAh.

The plane is very hot on landings, I have flown it with a SuperTigre 45 and a 10 x 6, with very low RPM at landings so I figure out that is the design of the plane what makes it fast and hot for landings, but do not worry about it if you have a good far sight



I have some particular question regarding your move to nitro:

Is the price of lipo batteries?
Price of electronics?
The smell of nitro?

I will appreciate your comments.

Good luck in your project.