So we have been flying APM for about two years on fixed wing and mapped a lot of ground: http://deaconeye.blogspot.com/ Started with APM on multi's as well and been using Pixhawk for about 4-5 months with good success. We want to move towards a traditional heli since we fly from some islands that have no landing spots and multi's have limited times. So we want to end up with a large gas heli but we have no heli experience. So what is a good path to get there? Should we just get a Blade 600X kit, build it and fly it for a while then start the move to something larger (gas). We want to end up with 1.5 to 2 hrs flight time i.e. http://www.bergenrc.com/ObserverTwin.php Is this just really out of the question right now unless you are already entrenched in heli's? Just looking for advice so we do't waste a lot of time and money.