Running a public instance is 100%, definitely not suitable for someone without experience or at the very least a solid background and a sincere willingness to learn and spend time maintaining it.
A private server for yourself and a group of buds?
There isnt really a reason not to give it a go if youre interested.
Not sure why you would think this place is out of reach of DMCA.
As for what you can post, check the rules
Rule 3: