Try reading the user's guide for that motherboard.
3) That enables the onboard LAN (p9 of the users guide)
4) It's a small formfactor motherboard, which forces everything to be jammed so close together. Quit whining.
5) I believe JP21 will allow you to add another TV-OUT. That's an unusual feature for a motherboard, so I'd run with it. I'd be surprised if you can have two LVDS displays, one VGA display and two TV-out displays all humming allong at the same time. If you're able to pull it off with this board, there's lots of others that want to know about it. Oh, and your math sucks.. That's only five screens.