I just got my 2007 Mustang V6 Pony Package, it's Torch Red

.
I am looking to upgrade on a budget. I have less the $1000 to spend and I am not great with installation, so I would have to have it done somewhere.
Basically, my question is, what should I upgrade to give me the best value?
Right now I'm considering:
Dual Exhaust (Ford Racing?)
Cold Air Intake (Roush?)
Either one or the other, or both.
Most importantly, I cannot void my warranty. The car is a lease as of now, but I will buy it when the lease is over. So, I am assuming I can install upgrades. I will be going to the dealership sometime this week to see what they will accept or reject.
Thanks,
Jacob