If I had my druthers I would put a gas engine in a plane that big. The fuel costs alone make it worth while. Glow fuel at ~$16/gallon as opposed to gasoline at ~$3/gallon. No brainer in my opinion. I'm through buying glow engines for just this reason. My glow fuel bills last year were right around $750 and I'd like to knock that down a bit by going with gas.

Hope this helps

Ken