My last bike was 19" and I was able to ride it only at the saddles lowest position, I barely cleared the top tube (~1"). I'm going to get a used bike but am considering going 17" and raising the saddle. I'm 5'10", 180lbs, and have a 30" inseam. Would 17" be possibly to small for me? I know riding a bike in person is the best way to figure it out but in my search for used bikes I need to know if I should be looking at medium frames (17") or large frames (19"). Thanks for your help!