Wait for the lvl 57 15"Mk2's.

The Revenge it can take several types of guns. With sailors level 56 you have
access to those

of 2x14',
2x15'Mk.1
and 1x18'

I have one Revenge with 2x14' but the best option is to wait for level 57 and put
2x15'mk2 for take real power in yours shuts.

if you can armour it, i would certaintly get it.