Bed wood finish and stain

[GMtrucknut!!]

I am getting ready to finish the wood for my 55 2nd series. The gentleman whom made the wood is a cabinet maker and gave me a great deal on some extra kiln dried white oak boards. He recommended using special walnut to make the grain really stand out but I like to know what finish and whose product others have used.
I was told to use Minwax Helmsman spar uretrhane due to its capability to resist moisture and resist scratches. But if other products are available which are better suited for this application I would really like to know .