Hi there! I had an unfinished pine bedroom suit that was stained more than 7 years ago. I want to change the color from the antique spanish feel to something in the mocha/espresso family. Would gel staining be the only option since it already has a stain on it, or would you suggest another route? Oh, and what about sanding...Is it best to have that professionally done because hand sanding may take too long? I am up for any and all suggestions. Many thanks to all!