sounds like to me your not quite ready for a plane of this type, do yourself a favor and build a few more kits first. and i am not talking about ugly stick type aircraft
a scratch built plane like a p6e in a large scale takes alot of building experiance to get it right and a plane that is built right will live for years, if not built right seconds.... if you even get done building it

maybe do a search for a old royal p6e kit, they are out there they are a builders kit and require a lot of sanding. but it will teach you things you will need for a larger model