That Waterlox sounds like the way to go. I don't ever want to do this again on this truck. As for a color coat, I'll probably paint the cab wood black over the sealer before installing it. When it comes time to do the platform I will probably try to get a mahogany or cherry hue on the wood.
I was having trouble finding top kits in stock and was thinking about just buying and cutting my own material, but someone clued me in to Classtique (
https://www.classtiqueupholstery.com/). At $210 for everything, even tacks, this is probably the route I'll take.