It's one thing to redo a deck, interior or even entire electrical and
plumbing systems. Anyone with decent mechanical skills can tackle this.

But something that will affect how the boat actually SAILS when it's
navigating out of the shallows is not just a simple mechanical task. As
others have suggested, it's worth seeking out an actual naval architect
and/or someone that's actually DONE THIS to THAT MODEL boat.

It'll do you no good to have all that work go to waste only to discover how
poorly it sails once it's back in the water.