Wokks, I used titebond, that's what I had on hand, but DB said it's more common to use fish glue and warned of not being able to use water based finishes.
The Behlen poly isn't water based but the stain put on the mahogany might be, I have U-beaut and stewmac stains to play with. U-beaut mix with water only, stewmac's colortone mix with alcohol and water, but I only have a couple of those to mix a suitable colour with. Haven't planned that far ahead yet.