ooooffff that's a big project man. would be rad but not in the cards right now
don't know the plumbing answer at this time. the Zukes were a no brainer based on reviews, reliability and price point. i never looked at merc. was only interested in japanese for this repower.Go big or go home! Great project that will be interesting to follow.
How are you plumbing both intake and drain on bait tank and why Suzuki over Yam and Merc?