rooting it and putting a custom ROM on it might be a good idea if you're tech savvy if not, I would suggest as the others to restore it back to stock specs. Personally I would root it and then apply a custom ROM, that will get rid of a lot of the bloatware, you'll also be allowed to put on a custom kernel and then vary the clock speed of the CPU it will help with some bigger apps and help with battery life when the phone is not in use.