Which SD cards to use ?

Will be getting a 7000 series camera not to far off. With 2 card slots I was looking at the SanDisc SDHC Extreme Pro 16 or 32 gb cards or the Transcend SDHC 16 or 32 gb UHS-1 bothe class 10 cards or Lexar. I probally will do a little video but not very often. I will primarly be doing regular photographs. I have a video camera for videos but in a pinch not having it with me could use the 7000 instead if I had to.
Will the 16gb cards do it ok? Do I need to step up to 32gb cards. It does not have to be these three manufacrures. I would like good quality cards without breaking the bank. All help appreciated. Thanks

I use Lexar, SanDisc, and HP. I would go with the largest capacity you can and class 10.

As large as you think you'll need and make sure it's fast. Longer vides require faster speeds.
I've been fine with my Sandisk Extreme 30mb/s cards, but they're only 8GB. For video I use my cheapie Micro Center 16GB class 10's. You could get away with class 6 cards too. Class 10 doesn't always mean class 10, as my Micro Center cards will prove.. I'm sure that a few 16GB Extreme cards would suit you just fine

Aren't we limited to 30minutes of shooting anyway per initiation on the video recording?

Sandisk Extreme class 10 and also Lexar is good. I have used PNY in the past but have found them a bit less unreliable.