Dave, I have no doubt it will fly a model just fine. It's plenty of power. I just checked Pe's calculator, I don't normally use it, and it also gives ~3.3HP. To put this in perspective, there are a few posts that put the DLE 30 over 7k on a 20x10, and it's rated 3.7HP at something near 9k. What exactly are you putting in?

I'm just being accurate. Doubling power by going to diesel is great, when it actually happens.