|$900 isn't a whole lot....in fact, I would say that makes the switch you're looking at a "low-end of the scale" switch. But, if it does VLAN tagging and is Layer 3 (and therefore can do your routing) it should work.|
The issue isn't the amount of portson the switch, it is not having the ability to tear down the drywall and run additional wiring from each workstation to the server room.
One does not tear down the drywall to pull cables.
Is this a house or a place of business?
Is the ceiling in the rooms a drop (tile) ceiling or is it drywalled?
If it's a drop ceiling, you drill (or if it's steel stud, cut) a hole in the 2x4 along the top of the wall where you want an outlet. Then you cut a hole in the drywall at the correct height above the floor for where you want your outlet(s) to be. You then push a fishtape down through the hole in the top 2x4 to the outlet hole and pull back a piece of twine. You then use the twine to pull your cable(s) down to the outlet hole.
You can buy outlet cut-in's that don't require mounting to a stud that slip in the hole and then screw down in place. You punch your cables, attach the keystone to the faceplate and then mount the faceplate to the outlet cut-in. It goes without the other end of the cables go back to your central distribution point and are punched there. Then you test.
Depending on the ceiling, it can be an easy job, or a hard one. If your ceiling is drywalled, forget it.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.