Why did you buy this bike if you don't like 700 wheels? Frames and fork are designed to be ridden with certain wheel size. Brakes won't fit, fork rake will be wrong, BB god only knows, I'm not an engineer. I've never heard of any adaptors to make brakes work.
I don't think I have one bike that doesn't have toe overlap. I've never had a problem, you just need to be aware of it. Didn't you determine overlap before you bought the bike?