Mike,
Having worked at Nortel for 9 years and then another wifi expert company for 4 i'm sure I could show you some wireless that's faster, just as reliable, and easier to install than Cat5e/6
Alright then.... show me 1Gb WiFi .....at the same price point...
And since you've asked for it..... I dare you to come back and say wifi beats fibre....
Also, lay 3 or 4 pairs
I concurr..... much like a print run, the prep work is the expensive bit of cabling (trunking etc.)..... after that, it's a false economy not to give yourself some future proofing in terms of a few extra cables.