I think you'll like the Synapse. But do get some input on what size you might like if it's not too late. Per Cannondale's sizing for that model, a 54cm should be for 67" - 71" tall riders. A 56cm for 69" - 76" tall riders. I'd be in the overlap size for my height of 71".
I might go with the smaller size more likely as I like sporty handling over stable feeling luxury sedan like riding. Though if you are truly going to be doing long distance multi day trips, you might want the larger for the extra perceived stability. Although I don't think this is a bike with eyelets for racks and paniers you might want for long multi day trips.
Last edited by Iride01; 03-30-24 at 01:40 PM.