I think it is ethically wrong to put 2 strokes on a B17 there has got to be a RC law out there saying that only 4 strokes can go on a plane like that.
Is this your first build or your first RC plane? Either way you might want to keep this on the back bunner as a dream project and get some experience on other planes or at least an experienced builder with you every step of the way. Building is an art (so far I am finding out that I am not much of an artist
).
BTW, welcome to RCU, there is lots of good info here! Be sure to check out the warbirds forum if that is what you are wanting to get into.