Compliance will freakout about this. Better to pick a charity that you have passion for and get involved. Network with people who have the same passions as you. Talk with the director about starting a comitty to reach out to people +/- 5 years of your age. Giving $ is only going to get you into trouble down the road.
I agree that it seems kind of shady to offer a $50 donation to YOUR charity for exchange of a financial review/plan.
Would "waving" the financial planning fee if the client donated that fee to the charity of THEIR choice be an option?