The Rocket is a hoot to ride but I hear not comfy on long rides, though a touring seat is available.
I didn't think the Rocket felt any heavier getting it off the side stand than the America.
You will have a great time on it, just take it steady!
The ST is faster at the top end and if wrist ache is a problem, there are slightly higher bars available.
These are standard, I believe, for the American market on the '07 model onwards but also available for pre-'07 models (part #: A9638022 non-abs model, A9638023 abs model).
Either way, I pity your dilemma
