Either way really - whatever is more convenient for you - you don't say where you live.
The BB category is not actually a Suite - it's really a mini-suite and does not have the amenities that full suites do (S).
There are only 8 BB's - 4 at the bow of the ship and 4 aft. If you do take one book one of the aft cabins - if it's rough you won't feel the motion as much back there. Personally I'd go for a BA - more cabins to choose from.
Have a great time.