Game Server build is it possible?

I recently did a build and cut it down by about 1000 or so dollars and I was wondering if it would be possible to make a dedicated game server for about 1500 bucks it would have 20 to 30 people on it from everything from crysis 3 to minecraft not all running at the same time of course. what would be a good partlist to complete these goals or is it even possible?

Do you actually have the internet service to run all of that?

And are you the only person on the network?

If you already have a build, all you need is a strong CPU and memory

You can run minecraft while running the server if you have enough ram (8GB+). Check system requirements and forums.

Much of the hosting relies on your upload speed.

Speedtest.net

I have google fiber so I think ill be ok