With everything I've been hearing, I wonder if it's even worth trying to figure out how to set up bed levelling on my kossel kit or if I should just forgo it altogether and just take the servo as a bonus.

I tried to set mine up but ended up giving up. There was no information on how to get the firmware to remember and then adjust for the points probed and I could not find anything on the web as it is still an experimental option on Repetier firmware.

That probe is also the endstop.  You need to relocate it with some way to adjust what hits the switch.

Ok, sorry, that is basically what I meant to ask. I think I'll be able mount it on the smooth rods along the z axis so that the top of the aluminum will hit it, and it'll be out of the way of the carriage.

Not as easy as I thought, after looking at it, all the wires are already routed with the extruders. Not an impossible task, but I'm not trying to have to undo then reorganize all the wiring to the carriage.

If you are referring to the Z offset function in slic3r, I don't use it.  Just manually calibrate the nozzle distance from the bed and set it to 0.  It annoys me when people post their Z offset number as if it is somehow relevant to others.  When you are talking about fractions of a mm, it can vary for each machine.

+1

The only way I could see myself using an auto level system is if someone finds a way to put it in the hot end mount, similar to the various kossel FSR mods, so that the nozzle is the bed probe.  I tried for weeks to get the FSRs to work in my kossel before finally realizing that the tolerances and sensitivities are really not at the hobbyist level at this point.  IMO, any system that uses a bed probe adds unnecessary complexity and is harder than manually leveling the bed.  FSRs are not reliable/ repeatable enough.  I'll revisit this in a couple years and see if something better has come along.