Co-sleeping help please

[Gladiolus]

My children are 2 and 4 and we (my husband, myself and both children) want to continue co-sleeping together - however I'm pregnant and when the new baby comes I have no idea how the co-sleeping with both children will continue to work.
Right now, my DD (4) sleeps mostly in the crib that is side-car attached to our queen-size bed (wish we could afford a king!) but she creeps into bed with me sometimes too. I sleep next to her, my DS sleeps on the other side of me - in between my husband and I. This is how it has been since he was born, always in the middle with us.
He told me the other night that he wants to keep sleeping in my arms after the baby is born. It just melts me. This is what obviously works for us in every way but where do I put the new (summer) baby?!
Has anyone successfully co-slept with 3 children? What was the arrangement? I will be nursing exclusively so the babe needs to be next to me, no matter what.
I've thought about getting a twin size bed to replace the crib and see if the two older kids can sleep together next to me one the one side and the infant in the middle.
I really am at a loss of how to make this work without tears for any of us.

[pixiekisses]

We successfully co-sleep with no less than 4 children. (300 cm. bed, wall to wall.) Earlier, the arrangments was the two 6 yo. in one end with girl next to me, then baby, then dad and then 4 yo.
But we decided we wanted to sleep next to each other, so we switched it to 4 yo., 6 yos. with girl next to dad, then me and then baby.
Our 6 yo. girl has special needs that makes her have to sleep next to one of us. And her and her brother will not sleep without each other. I think the 4 yo. will move out if the bed before them, I think they would be ready to sleep together in another room if they could now. Anywho. What's important here is to seperate the newborn from the other kiddos with a parent. Older siblings are not aware of the baby like parents are, they could possibly roll over the baby or kick/hit the baby.
Otherwise, I think your plan with a twin for the older siblings and the baby in your bed is great. You can even try putting dad next to the older siblings and baby on the other side of you so you two can actually sleep next to each other (if the bed has a rail or is by a wall, obv.). Me and my dear thinks it's quite nice.
We all sleep well and love to sleep like this.
I would do the transition now though, before the new baby comes, so it's not all about the baby.

[To-Fu]

I'm preparing to figure out how to do it with just two, so you're already way ahead of me!

I think the twin mattress idea sounds pretty good, but like I said, I'm speaking from total inexperience here.

I saw this on a fellow MDC mama's blog--they have four:

http://totallysmittenmama.blogspot.c...6/our-bed.html