Here are some new pics of VERSION-5. V4 was ok but not close to what I need.
I decided to make a simple sled like on a table saw. Straight edge fence on the right, feather board on the left. Fixed front and back fences. Bit cuts down the middle. 220 sandpaper does a nice job of holding things in place. I had hold downs, but I'm not sure they're needed- this is only 3/16 thick.
Needs some tuning and more perminate clamps, but I think its on the right track- at least for my skills. Last two pics are the box I'm making (less top and bottom). Its amazing how 1/32 off shows on a 2in box.
Any comments or suggestions are much appreciated.