Yeah I see what you mean.    The hard bit is getting up to 10km ,  after that you've actually got pretty good TWR, but the question is , is there enough fuel left?   More wings means less drag (because you can fly lower aoa and get up to greater altitude sooner), but more mass needs to be accelerated to orbital velocity. I got frustrated with the initial takeoff part, and eventually just installed Mechjeb to give me the precise control of AoA you need to make that marginal low altitude flig