Random swap questions

First question- pcv system.. I’ll be using a prefix intake. There are two ports on it for oil fill. One is threaded other is a plate cap. Can I just run a catch can with a single line to it and filtered can? Or do I have to pull vacuum back through the intake?

second question- there are three ports on the water pump one on the back one on side and one on the front. The back and side where to heater core I’m assuming and the front has a threaded nipple. Can I cap the ones that went to the original heater core? I’ve heard you have to loop them. The one in the front I was going to use for factory temp gauge for the dash.

lastly- power steering a/c delete. I have the idler on the driver head and the idler by the water pump. I need to buy the factory tensioner( missing). Only thing I’ll be running is the alternator in the factory spot water pump and dampener . I know it will be a pain in the *** but I’m thinking I’ll have to make a few trips to the auto parts store to get the right length belt to make work?? Any thoughts or if someone has part number for belt that would be awesome haha.