Hey there,
I think your motivations sound right on, and your rural focus is particularly in line with the mission statements of many medical schools. This could really help you since, besides your verbal score, your numbers are just fine. If you really don't want to take the August MCAT, I'd suggest researching which medicals schools have an explicit primary care/rural focus and pitch yourself strongly to them via your AMCAS essay and secondaries. I know there is a shortage of people wanting to go into rural, and schools are looking for such people. There are even explicit programs at particular schools to apply to, I just can't remember where I've seen them.
I would also suggest checking out your state school(s). Your best chances are always at those, esp. if they have a rural mission, too.
Good luck!