The cab looks very good.
I read on another forum about using gun stock oil for finishing. I am not very good at wood finishing and keep learning as I go using whatever I find at local hardware store.
I finished one amp in brush on bedliner for stage use it came out great very hard surface and holds up against abuse.
Head ups about using drawer kits from http://WWW.woodcraft.com they are made from cherry 5/8 wood dovetailed. I have used about four so far for head cabinets.