Long shank beading bit?

OK put your thinking caps on for me. I am 700 miles away from my shopbot, no one in this area i can't find with a cnc. I have no router table so i was going to make a cheap one out of plywood.

I am trying to recreate this door trim molding. The problem is the beading bit i have is too short. I wanted the trim to be about 3" wide and maybe 1/2" blank on each side but by the time the bit sticks thru the table it might bead the bottom part of a board and not the center.
I can't afford a molder/shaper for a grand. Does anyone know where i can find a longer shank beading bit? I've looked on ebay, amazon and magnate. Or if you have a better solution or other way to do this please tell me! thanks

They don't make anything like this for the table saw do they?

Research led me to table saw molding kits. Any recommendations for a triple bead molding cutter?

Craftsman makes a molder head for the table saw. The should have all shapes of cutters to put in it. Shopsmith also used to make a molder head and all shapes of cutters. Not sure if Shopsmith is still in business.

I have one of the Craftsman cutters I got from my father in law works pretty good just be careful of knots in the wood. Kick back caused 11 stitches in my palm