This is the best advice, not matter how much foamie time or sim time you have; a wooden giant scale gasser is going to be way different, especially the wing loading, you won't be able to just float this in to land. Seek out your local jedi masters at your flying field young padawan, they can help you with your line routing, tank setup, engine tuning and of course maiden your plane.

I don't know of anyone who started out on foamie electrics who jumped straight to giant scale gas warbirds and maidened, let only succeeded on their own.