I think that should be a category 8B...none of the cat 9's fit five people...unless there are just 4 of you!
My kids are soo excited we printed out the deck plan of the ship so they could be working out their walking plan to their favorite spots! HA!! Are you signed up with the cruise meets? My kids are hoping more youth will join so they can share their excitement!
Not a pro by any means, but if I can save the family some funds...I become laser focused!
I think any room on the ship will be great, you should be able to pick out your room online this far ahead... I would choose forward or midship if you can...closer to most the youth clubs...my kids like to run back to their room for something and looking at the length of that ship, going from aft to Vibe would be quite the hike!