This fall I'm going to start building a Hostetler 27% Extra 300XS. I don't want to go glow because of the mess and fuel cost, so my only other choices are gas and electric. I would prefer not to go electric because of the limited flight times (Hostetler said he was getting 11 minutes with his electric set up on this plane, and I like to be able to stay up for 15 minutes) and cost. I figure my best overall choice is gas. Well, I know nothing about gassers.

I spoke with Mr. Hostetler quite a bit about this plane before I bought the plans and he said that with his electric set up (see above link) his plane was only a couple of ounces shy of 13lbs all up. He said as far as gassers go that a DA50 would be a great match, but may very much overpower the plane. Also he said it would add a lot of noseweight and something would have to be done to keep the plane balanced.

I want to do IMAC type flying with a little bit of 3d tossed in. I would also like to run a 3-blade propeller if possible (better braking and great aesthetics), though I'm not really hung up on that idea. Weight is a big concern. The wing loading on Hostetler's design is very light and I want to keep it that way. I'm planning on putting the rudder and elevator servos in the tail, so that might help with nose weight.

I've checked out all the manufacturers of 35cc-58cc gassers, and frankly their published information is confusing and inconsistent, making comparisons difficult at best. Quite a few of the threads here are no different. I'm hoping to get good, logical information and recommendations from those who know more than I do about this particular subject. Let's not turn this into a flame fest; this thread could provide useful information to others in my same position.

So, with all this in mind, what would be my best engine choice and why?

Thank you to all who use their valuable time to respond!