When you spray the poly, just be sure mask off the neck pocket and heel where they will mate when the neck is inserted. You want the glue adhering to bare timber on both faces....and once done will spray a few layers of Polyurethane in a spray can on the body and neck separately, then will apply wipe on poly to build the layers, I don’t think I need to worry about the bindings at this stage as I’m using a gloss clear poly as a top coat. After this, I will then glue in the neck.