I'm mostly going to be focusing on the deck hardware and hatches at first.@JUUD Notice you said you'd be sealing everything. As most will tell you, silicone is not the best sealant for a boat and by and large you want to avoid silicone when you can. Many will say a No-No since once you put on silicone it is nearly impossible to remove and use something else making further sealing a real chore. I am sure others will chime in with suggestions. It depends a lot on what you are sealing. Best of luck with your project and I'm looking forward to pictures when you get her ship-shape.
By the way, don't use 3M 5200 as a sealant unless you want it permanent. It's an adhesive, not a sealant. There are lots of other appropriate sealants. 5200 is the Devil's glue.
Waiting on my order of butyl tape to show up.
I will only be using the 5200 on places like where the decking meets the hull.