First of all thank you and your hubby for rescuing these poor babies
and welcome to pets.ca
I have no experience in caring for kittens that young. We do have a couple of members here that are very experienced but unfortuneatly they are in bed by now. Is there a 24 hr vet in your area that you can call for advice?
If not, there is some info here ....
http://www.pets.ca/articles/article-catfoster.htm