New member, new V20

[Destroyer]

Hi. Welcome aboard. Pretty much what everyone else has said. Get rid of the old glass fuses. Yes, they work, but they are a pain in the neck to find, and are prone to corrosion. Get a new fuse box that uses the same type fuses that you see in cars now. Much easier to find and replace., and are not as prone to corrosion at the contacts.
Also, if it were me (And it has been on several occasions) when I get a new boat I tear out all old wiring and replace it. Lead one main cable from your battery to your fused buss bar, then from there to your switches and various gauges, pumps, finders, horns and lights. Neatness counts. And if, as I suspect, you're going to use your new girl in the ocean, make sure you use corrosion resistant measures at every connection or splice.
In all cases she's a good looking boat and you're going to be surprised at how well these hulls handle and how dry your ride is going to be. Best of luck with her in the future.