Newbie question regarding a Gantry system using a 7i96s

Hello everyone,Could you help me set up the control for my milling machine? The following setup is available:PC Lenovo ThinkCentre M91p i5 2400 8GB RAM
Mesa 7i96S Power supply 24V 10A or 2x 48V 7A
4 JMC closed loop stepper 3Nm / servos 180WThe milling machine is a self-built gantry designNow my questions:
0. Is there a well-documented example of setting up a control? There is a lot of information on the subject, but as a beginner it is very difficult to filter out the good explanations.
 

1. Are the axis designations fixed/relevant for LinuxCNC? On professional machines, manufacturers differ in X / Y

In the axis gantry.ini example, the Y-axis is doubled.

1. In the Axis example there is a special version gantry_jjog Do I understand correctly that with this version I can drive the double axis separately to a certain extent in order to align the portal?
2. End switch type Can someone recommend a good small end switch? I bought some but they are very large, about 8cm long. This is rather unfavorable for the construction. Alternatively, I have these small microswitches. Inductive limit switches are also an option. However, these are significantly more expensive and only come into question if there are real advantages. I don't see the accuracy as being so critical. With a 1K temperature change, I expect a difference of about 0.02mm over a length of 1500mm. So a sensor of 0.01mm is not really necessary.
3. End switch mounting/control If I attach an end switch to the moving part, I only need one switch for min and max, one cable and one input on the Mesa card. However, it cannot be distinguished whether min or max was triggered. Does this limit the function or is there anything else against this solution? Does anyone have an example of the wiring?
   
   That's it for now, but I'm sure I'll have more questions as we go along.

Thank you for your support.Best regards Erwin

Here is a nice Video

Yes its a nice vid.

I see you have HOME_SEQUENCE = 2 for your tandem axis YY

This should be HOME_SEQUENCE = -2

The -2 lets the system know that it is a tandem axis.