You can do everything you can with Facebook in chrome it even still notifys you when people comment if you leave it open in the background. As Facebook's ui for mobile is just as good as the app. Performance in my phone is way faster and battery life is improved. Also if your not using stock apps disable them in settings so they don't run in the background. Using Nova prime has improved my battery life to as touch wiz has to much going on.
Hope this helps
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