Autopilot help

[Macman]

I am going to be installing an Autopilot this spring. I have a 1992 28' Baha with Flybridge. Currently looking at the Raymarine EV-200 system.
The plumbing I am not sure on. It is a SeaStar system with a balanced RAM. There are 2 Hydraulic Lines connected to the Flybridge Steering Pump coming from below, There are 3 hydraulic lines connected to the main helm pump and there are 2 hydraulic lines connected to the steering ram and one short clear line that goes from one end of ram to the other.

Here are the questions:

I understand every install is a little bit different, but because I can't see the hoses (buried in walls) how does this all connect together typically?

Is there a check valve typically?

Where does the pump get plumbed in?

And since the hoses are all NPT type fittings, should I just get custom length hosing made up?

I understand this may be vague, but I don't have the $$ to have it installed and I really want to learn how to do this so that I may be able to better troubleshoot later. I just need a little nudge in the right direction.

Thanks in advance for your time
Steve