I've just realised why Mantis sounded familiar.
I wouldn't worry about adding limit switches or home switches, as any kit used should be able to resist a stepper motor stalling.

I've got no idea how Mantis interfaces the BoB with the KFlop, but there are pins on the KFlop that should be able to control the enables directly.
If you're unsure, it's probably best to post over on the Dynomotion forum, as the man who designed the KFlop will give you a definitive answer.

And for those wondering what Mantis is - https://www.bfg-motion.com/index.php?p=1_4
It's essentially just a computer program connected to a KFlop that lets you control 8 axes simultaneously. It's not really anything that complex, just a nice bundled package that's pretty easy to use, aimed at photography/filmography purposes so you can repeat scenes.