Been there, done that.
And then I bought a frame in my size.
It's a very doable thing. I wish I had a longer steerer on the old bike though, so I could raise the fork up by a cm or two. Overall, just get a longer seat post, longer/taller quill stem, and it will be a pretty good ride. I had a horrendous amount of toe overlap on the white bike (Trek 760), and it was awesome

. I could corner like crazy, and it was a very downhill rider.