I mean cat6 and electric running parallel within 12" of each other (example: think of zip typing cat5 to electric). Crossing electric at 90 degrees isn't too bad, but running parallel within 12" is.
Bundling cat6 together with only 30 drops really isn't bad at all as long as everything is run correctly by spec in the rest of the house. its not like an enterprise where all 30 drops are running data traffic simultaneously all the time.
Oh, and for a 2 story, 3 bed home with office and 1 entertainment center, typically I do 26-28 drops.
2 in each bedroom (pc & stb)
2-4 to kitchen, depending if they have a TV in the kitchen (voip, spare, stb, spare)
6 in the office area (printer, wap, pc, voip, backup drive, spares)
8 to entertainment center (stb, tv, bluray, ps3, 360, network media player, spare, spare)
2 drops to central location in basement and upstairs for additional WAP's or other things.
I agree with most of your drop amounts except the entertainment center. That can be handled with a small switch. It is not like you will be saturating a single uplink since you will only be using 1 maybe 2 of those devices at once. And usually finding room for a small switch in an entertainment center is not tough. Plus you need a double gang wall plate just for the network drops, that is crazy.