I'm not sure, having never done it, but I think oil over epoxy would just make the wood oily,
until the oil evaporates, that is.
A Youtube couple with a series called "Sailing Lealea" did a complete interior refit
a year or longer ago and covered their work in detail, with epoxy coating at the forefront of their work. Since they did it that way, I thought it might be helpful to check out their Vlog.