If you intend to do any Development on the Server (ie. use the Configurator) then I would set to
Server 2048
Tomcat 2048
Configurator either 2048 or 1024 depending on the size of your bsv
If Not using Configurator on Server then
Server 3072
Tomcat 3072
Configurator 512
I am by no means an expert so if anyone can provide some rationale as to the benefits of using different values then I would love to hear it.