how many players can i hold?

[BehaartesEtwas]

the number of cores does not help you running a single 50 slot server. what you plan to run will only work on the fastest cpu currently available on the market. you have both large servers and quite a number of servers. so you need 4 real cores (not hyperthreaded), because the servers are too large to share a cpu. and you need the fastest speed per core, because each server is so large. even then you will have to do some work to get it lag free!

or maybe you should try something smaller... are you sure you will be able to fill all those slots? would be a pity if you go through all that effort go run those servers but never get them full...