Server migration help

Hi,

I have recently purchased a new server for our small business, our currently server acts as pretty much everything, a file server, AD, DNS etc.

I now need to move everything over from the old server to the new server

What is the best way for me to migrate everything over in your option?

There is only about 200gb of shared files to transfer.

Should I just a run a full windows server backup and restore it to the new server?

Or

migrate everything bit by bit using server migration tools?

or

is there another method you could suggest?

All advised/help appreciated

Thanks
Ben