I understand how you feel (even down to the ebaying - OMG I think at 35 weeks I'm packing that in, the last lot of selling was really hard work!)
We too have a hospital up the road, but you're not allowedto have a baby there any more despite it being the largest town, well the only city actually in the area. You have to drive for half an hour to give birth.
I'm on my own and no one is around to drive me, my last labour (at home - in old house) was 3.5 hours so there's unlikely to be any time to drive, in any case...it was full on every 5, then 3 minutes from the start.
I've been having some issues this time (also third) and have low fluid and am having extra scans. MW booked me on her own advice to have a home birth but said the other week, if I have low fluid it might not be allowed.
I'm trying to get to 37 weeks as well. I had no idea till reading this that babies born at this sort of gestation can actually be in real trouble - everything else I've read has been reassuring. So it's an eye opener.
Thing is once I start labour I doubt there wil be any other option than have the baby at home or call an ambulance - which is, of course, going to be here within a minute or two as they are stationed nearby - so I'm a bit torn as to what is best.
I am totally with you on the interventions, though - our hospital where I had ds1 years ago was dreadfully understaffed and very very unhelpful in many ways, it's true, the more you allow them to do to you, the more they insist on doing thereafter, because you've entered a spiral of stuff that leads onto other stuff etc etc.
I heard that baths can slow contractions - you could try just having a lot of long hot baths between now and Tuesday!
let us know how you are getting on, baby could be OP thus the back pain. I hope he or she holds on a bit longer for you.