Let me add one more app that is almost a must for any user who wants to root their Nexus 7.  ROM Toolbox is amazing.  This one app gives the rooted user the ability to flash, backup, change fonts, load ROMs, etc all in one app.  Highly recommend any rooted user to download this free app and check it out.  It is truely a "Tool Box" for your Nexus 7.

I'll second that. An amazing app that's currently being improved with regular updates. This one app can replace several apps that are useful in the root & ROM department.