go the revenge/kgv line
nelson cannot aw unless you drop a gun and to aw any bb effectively i at minimum
carry 9 inches deck and i prefer 11+ (kgv) and 10+(l1)

if u can get in close enough with a bb3 or bigger + lots of deck then you can cause
some serious problems with anything. Excluding vanny...

Both Nelson on the Renown line, and KGV/POW on the Revenge line can armor whore
semi-effectively. But you won't be able to truly benefit from it until Lion 1 and Lion 2.
So either line is suitable, it depends on your play style and preference of ship.