Hi guys, I am in the process of building ACI Sapphire III speakers with 3/4" MDF. The veneer is ordered and on the way. 1) Since I am using veneer, should I still seal the MDF first - and if so, with what?? Can I use diluted titebond or white glue? 2) I have ordered 2-ply veneer. What is the best type (and brand) of adhesive? pros/cons. 3) I already have a gallon of Minwax polyurethane from another project. I think the sheen in "Satin". Is this OK to seal the unfinished veneer? I don't plan to stain the cherry veneer. Will the poly slightly darken the veneer? Anything else I should consider? You guys are the best! Thanks!!