Multi-server? Nope, single. Same as you have now, just with added flexibility on ram with 2 clicks I can handle a huge server load with ease, then drop back when done. That way I don't waste time on low level optimization tasks and can keep to what I do best. Building things.
Seriously, there's no reason to stay on a traditional style server setup and you'll never go back once you've tried it. It can be pricey once you ramp up, but give it a shot as you can literally pay by the hour while you play.