I am building a new house and would like to run a some cables (ethernet, speakers, rg6) to some hard to reach places before the sheet rock is install. The house frame, roof, plumbing and gas lines are done. Not sure if it's too early now to run my own cables or should I wait a bit longer. Maybe after the electrical is done.

more detail info:
two story house, media room upstair, home office downstair, gameroom upstair.

Any suggestion is appreciated.

cheers,
Marcus