I want to paint over 1970's dark wood paneling. It has deep groves in between each panel. I would like to paint over. Do I need a primer? Walls are smooth with some wood grain. The room has dark everything it in, with a hung pegboard ceiling. The carpeting is brown/tan/white marbeled effect. I know white would be too bright. Cream or light beige? What is a good brand? Please give me any input asap. Thanks for your time.