After a long day of yard work, I've been sitting here researching cruises for next year!

So I was completely sold on the Horizon sailing but I started diving too far into the Carnival website! What would you all choose?
Carnival Horizon: 8 nights out of Miami. Ports are Grand Turk, La Romana, Curacao, Aruba.
Carnival Breeze: 7 nights out of Port Canaveral. Ports are Cozumel, Belize, Costa Maya and Mahogany Bay.
Two adults sailing and both would be new ships for us. Horizon is approximately $300 more. We would probably get inside cabins on either sailing. Most ports on both sailings are new for us, except for Grand Turk & Cozumel. Honestly, I'm a little over Grand Turk as we've been on our last 2 cruises and think I would enjoy Cozumel more. We do love 8 day sailings, but the Breeze sailing would also require one less day off from work. And we are planning a WDW trip next fall.
Also random, DH does not like the Horizon/Vista atrium

He loves stepping onboard and having that huge open lobby space, which I enjoy as well. Don't worry, I've already prepared him for the
DCL lobbies!
Any input?