Limit and Homing switches Over 2200 members today

I am converting an EMCO COMPACT 5PC lathe to more modern drives, G-320, with
servos, instead of the old steppers.
I have now come to the part where i have to think about Limit, and Home
switches.
Has anyone on the list got the answers to what I should use. This is a 5 x
12 lathe so something bit would be very hard to mount and use.

So any suggestions, and part numbers would be welcome, with the emphasis on
small, being a high priority.

I have noticed on several surplus, (not lathes,) that they are using optical
switches, any comment on repeatability and how to tie them into the system?

Help,
bill