The DLE 20 is plenty of power for this plane. I flew one for a while with another brand of Chinese 20cc engine and it had more than ample power for anything I can put a plane through. The DLE 20 is significantly more powerful than that other brand (and lighter and more reliable).

The thing you need to be careful of is the increase in wing loading. You will need to land a bit hotter than you would with a glow setup in the same plane. the weight is higher. you wil also need to move batteries toward the rear of the plane for balance.

Other fun flying options for the DLE20?

MoJo Profile - more fun than should be allowed.
Almost anything in the "0.90 size glow" Category (or smaller) = ballistic fun
Anything in the "1.20 size glow" category = good flying.