First, check your pickup height against the Fender Setup Guide
specs just to make sure you're in the ballpark. Pickup height has a lot to do with output and tone. The Fender specs are just a starting point and your ears are the ultimate judge but if you're 1/8" lower than spec you can safely raise them and expect an increase in output.
As far as pickup choices go, if it's output you want while keeping single coil tone then Duncan Quarter Pounders will get you there. The DiMarzio Ultra Jazz are also pretty high output and have a more modern jazz tone. You can also add a preamp to your existing setup which will give additional output and EQ options.