don't put the wing on, get in a parking lot somewhere out of the way (like a school bus garage, when no one is around) where you have a whole lot of space. get the engine started and see if you can keep it within a lane on the ground. I bet you can't. It will take a while to get used the power curve of the engine, and what kind of response you get from the rudder controls on the ground. Also, you will have to get a feel for how long it takes to slow it down once you get rolling. These things are just as important as getting in the air. This will also give you some time to get used to starting the engine, and tuning it, before you get a chance to dead stick at 4 or 5 feet altitude. Keep trying to get ahold of someone to help you. It will save you a lot of grief, I know this. Take some time and taxi it around in some short grass to get used to the way you have to control it on that kind of surface, also.