I will also chime in here about the long debated taildragger vs nosegear situation. I'm flying the same plane you are about to build, and it's been a taildragger since the day I put it together. If you fly off grass, or just rough surfaces in general, it will handle much better than the nosegear will. Contrary to what some would have you believe, it is NOT harder to learn to fly a taildragger, especially if you start out learning on one. I see more guys having problems trying to fly taildraggers AFTER they learned on a nosewheel equipped trainer, than I see first time students having who are learning on a taildragger from the start. I would reconsider the Sullivan tailwheel set up on the LT40 though, because of the fact that the rudder is above the horizontal stabilizer, and doesnt extend down to the bottom of the fuselage. Because of this, there's nothing there to hook the Sullivan tailwheel to, since it connects to the bottom of the rudder using a spring for tailwheel steering. I would go with the Great Planes tailwheel (which is the one I use) or something similar. You just run another pushrod from the other side of your rudder servo to the tailwheel for steering. Much simpler than some of the setups I have seen to try and get the Sullivan hooked up to this particular aircraft. I used the Golden Rod pushrod for my tailwheel pushrod, but used the stock pushrods that came with the kit for the rest of it, and have had no problems, so there's really no need to spend the dough for them unless you just really want them. I've got the Dubro main gear and Sullivan Skylite 3.5" mains. I'm running an Evolution .46nt turning a 12x4 prop, and it flys beautifully. The props you mentioned will be better for you just starting out, though. If you've got any questions about the tailwheel setup, PM me and I will send you some pics of my setup if you want.