for me the real question is... why not?
i mean u r re-designing your system...
i recently designed my fresh water plumbing
and started with a long line ot my transom for the 1st filter. normally i would not move water so far just to move it back to where it started but i wanted the easy access for filter inspection
i went with a filter designed for well water (rhino) because they focus on rust, micro particles and chlorine and, to a lesser degree, soften the water too.
i have a small charcoal filter at my galley
sink which i think is overkill but it seemed silly to not just put it inline.
i will add the caveat that i will be filling my tanks in mexico
etc and expect i may have questionable quality / need to treat (chlorinate) the tanks from time to time.
lastly, both filters have a Y before and after so they can be bypassed. while there is little risk with a charcoal filter, more sophisticated filters have membranes and moving parts
that can, when all bunged up, completely stop the flow of water which does not make for happy days on board.