I'm looking to return to triathlons & centuries (after a 13+ year hiatus to start my family), and my 20+-year-old Specialized Sirrus isn't up to the task. Like you, I'm just shy of 5'. Any suggestions of mods could I make to this bike to make it work for longer rides? I'm a bit leary of 650cc wheels, but could certainly make it work.

Also looking at Specialized, Trek & Jamis (new), but not sure I want to spend that kind of $$$ before I see if I can learn to like cycling again. (Bad crash several years ago....)