I would at least do a stage 1 jet kit on my F2 this spring. I have a K&N filter and 2bros. slip-on. Looking for a kit not too expensive and cheaper than Honda's crotch-kicker prices.
If it helps, not a race bike. Just a weekend rider and commuter looking for power dependibility without sacrificing mileage.

 

Adding a Jet Kit along with the K&N air filter help get additional air and fuel into the engine. A Slip-On doesn't do anything to help get the air out except for change the sound. I think that unless you put a full exhaust system on it, you're not going to get the results you want. Based on your description of the type of riding you're doing, I'd stay with a paper filter and OEM jets. Your bike has excellent low and mid range poser which is where you do most of your riding. That K&N is probably already taken some of that away.