As for the front terminals. In the servica manual it is stated to cut some jumper resistors (R456 to R459).
If all of the 4 pins of the connector for the FP option is used, the current flows to the front and back to the rear if the load is connected there.
If the load is connected at the front, two of the 4 wires carry the voltage back to the rear, so the sense terminals at the back can be used and they read the voltage at the front terminals.
One interesting thing: the service manual also has a schematic of the board for the front terminals.
They have included some caps a 4700 pF, 250 V and a 220 pF, 1 kV in parallel from each terminal to mains earth.
I wonder why that is. Some compensation for the additional cunductor and its inductance? Just capacitive coupling to earth?
If I were to add them should I use ceramics like X7R or NPO, or should I rather use foil caps?
As for the binding pist and the shorting links.
Pomona has the nice binding posts Model 3760
https://www.pomonaelectronics.com/products/hardware/binding-post-tin-platedThey have also the shorting links Model 4115
https://www.pomonaelectronics.com/products/hardware/shorting-link-binding-postsThe posts are available gold plated as well as Model 3750. They even have a low thermal EMF version, Model 3770. But I think thats not needed here.
Although in the metal case there is only a small cutout, the binding posts shhould fit. There is enough clearance.
Especially when using a mounting base. Which I'd prefer because of the pre cut front panel. I think it then gives more stability.
The base:
https://www.pomonaelectronics.com/products/hardware/mounting-base-double-binding-post