If you want to make a DarkRP server, I would try to learn as much as possible about lua.. or get someone to Develop your server for you.
I would start off with getting a workshop collection, after that I would put it in the server. Then I would fix the server name through -> server.cfg then I would create some basic jobs like.. thief, swat and staff on duty.
And I watch watch hell of a lot of YouTube tutorials to learn everything that's needed to be a basic darkrp owner, also invite ur friends for fun and players