mic lines/Cat5e/coax other wiring needed for single room?

i am planning wiring-in-wall needs in a 520 sq ft/48 sq meters single room recording space operating around Logic Pro 8/HD24XR. I am planning on having 5-6 wall plates loaded with Neutrik Combo XLR/1/4" connectors scattered around the room.

I understand it is wise to use 110 Ohm digital audio cable for mic lines though I already own a bit of Gepco 6 pr multicore snake cable that I wouldn't mind using (longest run is less than 60 feet/20 meters).

1. Am I making a mistake by using the (already paid for) Gepco rather than installing 110 Ohm digital audio cables?

2. Should I be adding wall plates with Cat5e/r45 jacks and/or 75 Ohm coax connectors? What is limitation using cat5e versus Cat6?

3. Given the digital realities of today's audio electronics are there other wiring I should be considering?

Thanks.

If you are constructing, run several mapped conduits, then route through them as needed. Run twice as much as you need (i.e. conduits). Cheap now, expensive later.

the diff in price between Cat5 and Cat6 is neglibible so why not go with the better cable?

or if you're really adventurous, wire your house with fiber optic instead of ethernet