Cat-6 Installation Advice

[scary_penguin@xxxxxxxxxxx]

I'm finishing a basement, and leaning towards installing Cat-6 to four
data points.  My current plan is to run the cable about 6 inches off
the ground (to stay below electrical outlets, to attach the cable to
the back side of the stud wall by some suitably gentle method, and to
run the cable alongside coax and phone cable where they're going to the
same place).

1) Despite the fact that I'm not going through the studs, the back side
of a stud wall (between the stud and the foundation) is "non-plenum,"
right?

2) Most people sell 1000' spools, but I only need 500'.  Is there a
search that I should use to find 500' spools of bonded-pair cat6?

3) Am I planning anything dumb?

Thanks,
Jon