Is this the right way to implement a database using SQL Server Express?

1.       Purchase a single central server (if you don’t have one already) and house it in the Wild Wood Apartments headquarters located in San Francisco, California
2.       Purchase and install Windows Server 2012 Datacenter onto this single central server.
3.       Along with the Windows Server 2012 Datacenter, you will have to purchase a license called Client Access License or commonly referred to as CAL
4.       Install SQL Server Express onto this single central server as well
5.       You will then need to install remote desktop access to each computer in the 20 building complexes Wild Wood Apartments owns. This allows each complex manager to access SQL Server Express on their computer and input information into the database.

Is there anything that I would have to add on or include, am I missing something, or is something incorrect?

Thank you