Hi there Lullaby,
Is your pregnancy still high risk or did the problems from the first trimester resolve? If you are not having problems anymore, you could go back to your midwife and rather give birth with her at Genesis.
With regards to his rules:
1. You have to go into labour naturally with a VBAC as augmentation increases your risk for a uterine rupture. You can however use acupuncture, reflexology and other natural means of helping labour to get started. 40 weeks is a bit strict on a final date as a normal pregnancy can last for 42 weeks, so I would be wary of putting a 40 week "deadline" on a pregnancy.
2. Baby's birth weight can only be determined after birth, sonars are not accurate at measuring a baby's weight after 20 weeks.
3. If he means active labour, then 12 hours should be ok, early labour or pre-labour can take days or weeks, the new guidelines says that active labour starts more or less at 6 cm. So if you can wait till you feel you are sure you are in active labour before you go into hospital and your get to hospital between 4 and 6 cm, then 12 hours can be enough if you labour without an epidural and you are allowed to be free of monitors so that you can roll your hips around on a ball, walk, squat etc to help labour progress.
4. Very few gynies / midwives if any will assist you with a breach birth these days, so I would say that this one is fair. Remember to visit a chiropractor during pregnancy to help you get baby into an optimal position. Also visit
www.spinningbabies.com if your baby is not lying in the "right" position.
In addition to that, please take a good antenatal class that concentrates on natural birth, something like HypnoBirthing, I know I teach it, so obviously I am not objective, but I have had a lot of clients who had successful VBACs after the course.
And get a doula to assist you during labour. You need that support and guidance especially with a hospital birth. Someone who knows when to suggest different labour positions, to help your husband support your with squats, counter pressure etc, all things that will increase the chance of having a natural birth.