I want to use 4 electrics rather than gas simply for the reliability. That being said i dont know squat about them. I am going to estimate that the model will wigh between 15-20 lbs, 20 lbs max as a high estimate. I have 2 2650 mah sky lipo batteries, I would like to use them if i can get the kind of power and flight time out of them that i will need. I was looking at using a 25 size outrunner as recomended by a friend but am unsure that this battery will cut it. http://www.rchotdeals.com/products/O...-lb-plane.html I have the option to use 730 840 or 1000 KV and a 50 or 60amp speed controler combo. Looking for input on this setup or other alternatives. I would like to know what kind of flight time i might expect from this setup flying at 60-70% power, and wheather or not i can run two motors off of one battery in order to save money, weight, and space. I also need a to know what prop to use, i would like to use a 3 or 4 blade prop, 11.5" with squared tips. I would likely buy a 13" prop and cut it down in order to square them.