For "just enough" flight power, the DLE-20 is a good match. Similar output to the stated OS 1.20 4 stroke.

If you want "a little extra" and to have a bit more fun on that big bird with aerobatics, the DLE-30 would be awesome. That 108" wing will have a lot of drag, and 16 1/4 is a bit of weight, so I'd go this route for a little extra thrust of a larger prop. Just make sure you have the ground clearance for an 18-19" prop or go 3 blade since you'll have lots of power to spare. If you don't want to overpower it though, I'd probably stick with the DLE-20 as even it runs on the high end of the engine specs.

Zenoah G26 would also be a great match, but are a bit more $$ and weigh slightly more.


Hope this helps you! Good luck with the build!