I brought home a pristine Bridgestone T700 with a 21" frame, which turns out to be a wee bit small. I'm wondering whether it is better to seek out a longer seat post and stem to make the bike fit me, or to give it up and look for a 23" frame, which would (most likely) be a tight fit and may or may not be as well-preserved. Any suggestions/recommendations are welcome. The original seatpost is SR, 27.0mm