1. Get out of Corporate Finance and more towards the profit center side (Wealth Management/Banking etc...)? Or do I stay and progress w/ my current company?
Without knowing more .... I'd certainly say stay and progress. Leadership and promotion are key.
2. Get heavily involved outside of work? Charities/Volunteer work/ Leadership activities? Not sure what to do here, some examples would be helpful.
Yes. Remember that quality not quantity matter. Call up your alma mater, find your local Alumni club, reach out to the president and take on a leadership role. See if they schedule undergraduate interviews with alumni, take a leadership role in planning that. Or, more generally, call your school and see what you can do.
Touch your network too - for instance, I was just recently invited as a guest lecturer by a friend at another university.
Start a special interest group on meetup.com. Grow it for 3 years and watch it balloon to 300+ people. Have weekly or monthly meetings. Make it about whatever you want.
Volunteer at a dog pound, take on a leadership role within one function there -maybe adoptions or talking to people about the financial burden of adopting a pet - become the go to guy for something.
The possibilities are endless.
3. Take UCLA/Berkeley Extension courses to bolster GPA? Is this necessary with a CFA?
Not necessary at all with a 3.4. Doesn't hurt, but it isn't going to help either. Do it if you WANT to do it, not because you think you need to. Don't hang your hat on the CFA, a lot of people have them who apply. Its a hard test yes, but it isn't going to distinguish you in some kind of amazing way.