maybe it's worth giving ambos NSW a call and asking them? that way you get to explain the situation and maybe they can offer up options (ie when DD1 was needing to be taken to hossy with ambulance DH freaked out about it all and desperately wanted to drive DD himself so one ambo came in our car and with his bits and bobs to monitor and assist DD while we followed the ambulance...it was really weird but they were fast thinkers lol).
Anyway, what i am trying to say here is that there must be a solution that they can work with...surely?!
P.S. NEVER too late to *at least* ask around for HB help ;)
P.P.S with such a history of precipitate labours i would also be gathering info on how to manage if you are alone in labour. sounds like distance and isolation is a real thing and these babies can come flying out lol. I had to read some leaflet thingos when i was pg with DD3 for the very fact that my previous labour was under 2 hours. not that we want that to happen, but can be good to have that contingency in place IYKWIM. (ie. where is the phone, unlatch the door for care-provider, keep kids entertained, blankets for you and bub).

