DayZ PS4 Server Settings Day/Night, Slots, Server Restarts (Need Help)

I'm trying to figure these settings out for DayZ on PS4. It's a Public Server 100 Slot which I would actually like to reduce down to 60 slots if that's possible? If so how do it change it from 100 slots to 60?

As for server settings.. I would like to get as close as possible to having (3) 4 hours cycles in a 12 hour period. 3 Hours of Daylight 15 minutes of dawn, 15 minutes of dusk and 30 Minutes of actual night.

Also what is the purpose of having a server restart? Is it just to refresh the server and give it optimal performance? Does it have anything to do with loot in the game respawning or helicopter crash sites?

If that is the only reason how often should I have the server reset and how do I set it up?

What is the difference in custom server time or using system time?

Sorry for having a million questions.. it's my first time ever setting up a server and I'm a noob at it lol

I actually read that post, tried to reply to it but it kept giving me an error.. also I'm horrible at math and can't figure out the proper numbers/settings I need to input.

I don't see where it asks me what time I want the server to restart.

What is persistent server time?

When people play on that server will it automatically save their gear and such? And can they go play on another server with that gear?

Also if we reduce our slots from say 100 down to 60. Will we receive some sort of credit, server extension or refund for the 30 slot portion we paid for but no longer want?