Also another newb question... How would one know that the moser listing didn't include the board, and how would I order a board if I ever needed to (in case coop not going on)
Take a look at the wiki again. Just under the link to Mouser you will find 2 more links. These are the places where you will find the Jack and the case.
If you see other links posted in teh wiki you need to check what they are for because that is where you will find the other parts.
That is the great part about the coops; in this one you do not need to pay for shipping for parts from three different places PLUS you get the boards with the cutouts already in them.
In this co-op I figure that you will save in the neighborhood of $25 plus not have to make the needed cutouts. That is a great deal!