The GP Giant Super Sportster has a wing span of 82" and a thick air foil which is a bit on the large size for a 30 or 35 cc engine. Most 30 to 35 CC planes are 73" to 74" wing span. I previously had a 46 CC engine in this plane and it was not really over powered. Also, I am not the first person to put a DLE 55 in this airframe. There is a video on YouTube of this combination and it does seem to be hot but not crazy. I am sure this will work out just fine. I will let you know sometime later this week after the maiden flights.
Best wishes and good safe flying.
Heli-NuBee (AKA Roger the radial rabbit)