you'll have plenty of time to go to the Westin (more room to spread out and quieter)

PF changs if you find yourself delayed

they are both fairly close to each other on the lower side of the A's

depending on your times the Westin may have its own TSA open so you don't have to run around the upstairs part

The big Delta lounge isn't too bad there either located between either side of the A's, plenty to drink and eat in there as well, TV's wifi etc.. might be worth a 1 day pass if you don't already have access for such a big layover