The motion will obviously depend on mother nature.
The sea could be glass like, or ferocious.
No way to know in advance.
The general belief is, it can be rough the night out of Port Canaveral, and the night back into PC from
Castaway Cay.
That is two out of seven nights.

And the other 5 nights? ? ?
If you have an issue with motion on the ocean, no way I would book either of those two very forward cat 9a's.
Even the 8c's are way forward of the forward elevator bank.
I would pass on the forward Oceanviews and stay put, due to known motion issues.
It's not worth more sqft to be miserable. IMO.
Not sure of pax # sailing.
Book two cabins on deck 2. Price it out. Sometimes it isn't much more especially when I hear talk of a veranda.
You are correct IMO that forward is the worst during high seas. Especially if you are waaaayyy forward.
You feel every bump left to right, and all the up and down motion.
And you hear it too.
My family has always noticed the increased movement when forward.
Don't forget about the possibility of two cat 5, etc, connecting verandas.
I recommend Bonine too.
HTH
Good Luck