I think your wooden homemade bench description will be fine. I'm sure you will but just make it really really heavy/solid so that pulling on the press won't bend or flex things too much. You can make a pocket for the press if you want, but I think you could get away with a simpler design also- make just a rectangular, solid bench, and attach maybe a 4x4 to the top surface and mount your press on the 4x4. What I have isn't quite that solid but it's not bad, and it's done probably 15,000 rounds of reloads for me over the last 2 years. I have some 1x6's that I bolted together (long story, it was easier to do that than start with a 4x4), bolted the press to those, and then c-clamped the boards to my benchtop with about 3 clamps. The advantage of c-clamping is that it only takes a few seconds to dismount the press if there's a reason too, and it's still quite solid. This lets the press mounted on it's boards extend out over the front edge of the bench which is ergonomically easier for me. Just a thought...
My bench for the first year was just a Black and Decker workmate that I c-clamped two 3/4" plywood sheets to, with another board bolted to those which the workmate clamps hold onto. I used a couple of 1/2" I think bolts on the corners to hold the plywood together. Put a board across the bottom legs of the workmate, and then put a bunch of weight (lead, 5 gal pail of paint, whatever I could find) on that to make it more solid. Even that was solid enough to hold the lee classic turret press on and do a bunch of reloading. After I upgraded my reloading bench, I kept the workmate bench next to it and that's my casting bench now. Being so simple, I can just take the plywood off of the workmate if I need to hold something like the workmate was actually intended to do. Again just a thought, but that workmate was cheap, easy, and flexible.