Ahhh, I gotcha now. I thought you wanted a bigger engine. Sorry, I missed the part of the 'No engine in it'.[:@]

It might be much having an .80 in it, but can be done. Throttle management will be more sensitive than 'normal' since the plane is "small" compared to the powerplant.
After take-off, you'll pull the power to be cruising around at 3/8 or less throttle position.

If I were in your shoes, I'd buy an appropriate sized engine for it and save the .80 for something bigger... You'll want something bigger later on down the road..