"I am currently using Vegas Movie Studio "
Then don't even think of virtualisation
Performance hit will be too high
You need all of those four cores and memory of the current machine and more
Go and have a chat with this company
Welcome to David Vincent Clarke Ltd They are specialists in systems for video editing. In the UK they are probably
the specialist
PS I have no connection with them, except to have seen / supoportred several of their machines in use, And when I say chat - I mean just that. Ringo and the other chaps there are very helpful