I'm approaching the finishing stages of a coffee table I'm making for my sister. It's walnut with cherry trim. I'm leaning toward Behlen's Rock Hard Tabletop varnish for a warm look and a hard, damage-resistant surface. My plan is to thin the varnish using the recommended thinner and wipe it on with a rag, doing about 5-6 thin coats. The only problem is I want a satin finish, and this varnish only comes glossy. I've never rubbed out a finish before and I'm afraid or ruining it. So would it be a bad idea to mix the varnish with something else (say another brand of satin varnish)? I've mostly been using Tried and True finishes, but I don't think they will cure as hard as I want for the table top. Oh, and I really only have a week for the finishing process, so I have to rule out anything that will take longer than that.
Looking for opinions, thanks!