Hi Arn and Welcome! Thank you for your questions, your research and your love for your new suggies.
I'm just going to jump right in here and ask you who are you're getting your suggie's from? Not being harsh but 10 weeks is still to young to remove these babies from their parents. Is there anyway that the breeder can hang onto them for at least two additional weeks. I still am concerned that at 12 weeks it's to soon but like anything it is still a little longer for them to learn the things they need to from their parents.
I've never had joey's so I can't tell you about the cage bars. Are they 1/2" apart at least. You may want to get some hardware cloth from a place like Lowe's or Home Depot and put it up in your cage until the babies are bigger. I've heard stories of joey's squeezing through the bars.
Here a link for branches:
http://eucproducts.com/pricelist.html
Additional reading at Suz's site
http://www.suzsugargliders.com/index.htm
Again I know you are excited and we are excited to have you here but I'm concerned about how young the babies are.
Good Luck, God Bless and again Welcome!
Sorry...so rude of me. I also ment to say you're babies are very beautiful.