Hi olek,
About the growth and weight of your baby: I was told they don't usually do ultrasound to guess weight of baby so late in pregnancy, as it is really not accurate (10-15% deviation). This error in the estimate would mean that yours could still be 3.22kg (7lbs)!!
You could check if they could do an ultrasound of the cord, to check the bloodflow through it. This would give you an idea if the placenta is still feeding the baby properly. The risk of baby dying does increase after 42wks, I think it is partly because of the lifespan of the placenta (is supposed to last for a pregnancy of 40wks, and is less and less efficient after that). I do know 2 mums that lost their baby after 42wks (very tragic!! ), so it is a real risk, but I don't know how big a risk it is.
I think monitoring is probably a good idea too, as they can tell a lot from the heart beat. I know you would like to avoid the c-section if at all possible, but do keep listening to your doctors. Although they sometimes give conflicting advise and you may not always agree with them, they do generally want what is best for you. Write a solid birth plan that includes a phrase like: "... please discuss if any changes from the plan with me and/or partner...".
Don't wait for the registrar to write it with you: write it yourself. Let me know if you want to have a look at mine, I could send it to you by email, if you like. I think 'no syntocin' is probably a good idea: I found my contractions very strong without it, and was quite glad I didn't need it: my scar started hurting, which was why I ended up with the episiotomy plus forceps (which I am not sure they used all that much: no marks on ds2's head).
In the meantime, until Tursday, you could try all the home remedies. For me pineapple seems to have done the trick, and funnily enough (maybe coincident??) both for ds1 and ds2 we had a vegetarian spaghetti for dinner the night I popped, and a long walk on the day. I wish you all the luck, and hope things will happen before thursday!