Default Using N7 3G tablet as wifi only - disable 3G

I'm preparing to root my wife's N7 3g so that I may run an ad blocker (ad away). My kids play on her tablet and I've seen too many inappropriate ads.

Is there a way to disable the 3g radio other than use airplane mode? If airplane mode is my only choice, is there a way to hide the icon from the status bar.

Sent from my ASUS Transformer Pad TF700T using xda app-developers app
Daily carry - Galaxy S4 (AT&T), ShoStock v8.1 (and jeboo) themed by JohnMcW
Busy time toy - Asus TF700, ZOMBI-X (Beta testing)
Media device for BT audio in the kitchen - HTC Inspire, Fallen
Media device for car audio - HTC Vivid, PAC-man 4.4 [AOSP]

You can't know your limits until you exceed them.

My other device is an all grain HomeBrew rig.