I remember spending some millions of quid pulling twin coax all over a large building. Future proof for computers and all sorts, it was meant to be. Within five years, Cat 5 had come along and all that coax was wasted.
A one-inch placcy pipe is perfect. A drawstring is a good idea, but my "steel tape mouse" will pull wires a long way, and can cope with gentle bends in the pipe.
I'm about to move into a 16th Century house, and the future proofing there is something else
