I'm pretty convinced now I'd like to put a mid drive on my Windsor, even though it's a 56 cm frame and I'd really prefer a 54. I've already put thousands of miles on it for some reason, so it must be a good bike. Is there a particular 8Fun / Bafang kit that you all would recommend? Is it okay that I won't have disc brakes and that the frame is going to be a tad oversized?