I'm refinishing an old bass of mine and I'm currently applying about 6 coats of mint green oil based enamel to the body. When I'm finished, I'd like to put a clear-coat over top of it. I know poly tends to be harder than most laquers. I'd like something very durable that goes on CLEAR rather than yellowish like an oil-based poly will. I work at a Sherwin-Williams paint store, so I have access to almost everything, including nitrocellulose laquer. I also know a local contractor who refinishes cabnets that will spray it for me. What are the pros and cons of each?