I'm building a LEXL. I weigh in at 250 lbs, yes I'm fat, what I need to know is what you all think I should use, as far as engine power and prop. I,ll be flying out of a local airfield that has plenty of runway, but is at an altitude of around 4,900 feet. Thinking I'll need a lot of horse power to make it work.What do you guys think, and any ideas of what prop would be best.