Advice on proper care for wood is given in an article in the REFERENCE section. See
Wood Care and the Boston Whaler Boathttps://continuouswave.com/whaler/refer ... rWood.htmlMore advice on using epoxy and varnish can be located with a search. For example, this search URL returns many articles on those subjects:
https://www.google.com/search?q=epoxy+v ... ave.com%2FReading all the articles cited in the search results will give you plenty of opinions and advice regarding using epoxy and varnish to refinish wood.
Regarding use of an epoxy resin as a finishing coat for mahogany wood parts, the epoxy resin used should be an epoxy resin that cures with a clear finish, often a special type of epoxy resin distinct from the normal epoxy resin used as a very strong adhesive. Most epoxy resins are susceptible to turning yellow from exposure to ultraviolet (UV) light, so adding additional top coats of a varnish which has UV protection will prevent the underlying epoxy from changing color.
I have used the epoxy-plus-varnish technique on some small parts on my boat. The outcome is the wood tends to lose its elasticity, and it becomes very rigid, almost like a piece of plastic. I recommend you experiment with the epoxy and varnish method on a smaller piece, and then you can determine if you like the result.
The most important criterion when top coating any wood with varnish is to be sure to completely seal the wood from ingress of water. Any water that can get into the wood will result in a tendency for the varnish top coat finish to lift off the wood. All sides and edges of the wood must be coated to prevent water getting into the wood. In that regard, being sure the wood is thoroughly dry before beginning any top coatings is a good plan.