IMHO You're best bet is to make a split fence.
All you need is a piece of 90 degree angled aluminum ( or make your own from hard wood ), a hack saw, drill, T track, carriage bolts, T- bolts, and MDF.
Its the easiest thing in the world to build. It just sounds intimidating is all.
Think of it like the side of the fence closest to you on a table saw sled.
Its basically A long board on end tall enough to pass over the blade with enough height up top allow enough material left to keep it securely together after it passes over the blade. Only difference is the opening will be larger, you'll have 90 degree cleets on the back for support, and two pieces of sacrificial MDF with terminated, through slots routed into them so they can slide to and fro on the fence.
The out feed side sacrificial MDF will be held on with slightly longer bolts so that you can use shims to joint.