Absolutely VRBO is your best option, you get a condo with a kitchen, so you save on meals. You are going to play both North and South of wherever you stay so somewhere in central Myrtle Beach is your best option, in addition it puts you close to the 19th hole.
Once we get closer to the tourney you will start to see posts for ride shares and that is a good way to meet some people either offering to drive or looking for a ride.
I personally always rent on a golf course property so I have access to a driving range and putting green. There are lots of options and you should not have any problem.
Just a thought but you could always look for a roommate, there are a lot of people in your situation. Put a notice here in the bulletin board, you may even find someone to ride with from wherever you are coming from. I have found everyone playing is very accomodating