You're mentioning WIndows Server 2018. Are you talking about the server operating system or the SQL Server database version? I don't believe there is a Windows Server 2018; there is 2014, 2016 and 2019 though. There is SQL Server 2018 however.
You may want to clarify a bit more what you mean. Also, it doesn't hurt to take setup the server and test the sites out on your own. You can ask Kentico for development domain alias licenses.