Tony,
A great idea. Good on you. I agree with Cam that it would be good to select a charity that supports our troops. Two of those come to mind.
http://www.woundedwarriorhospitalfund.org/
There is another that I personally like even better, altough I do not recall the name of it. That charity provides help to the families of wounded military members who travel to visit their wounded family members in military hospital. Many of those families don't have a lot of money and the travel is expensive. Can you imagine a young man or woman wounded in combat who would like to see their mom or dad, but can't because the family lacks the travel funds!
If you decide to support either of these charities I will send you $100 and I don't even care about the raffle ticket. My RV is already in my garage.
Tony