Baby Hamsters

My fancy hamsters had ten babies this morning. I didn't want to take chances so I took out the male.

It appears that two of my four female mice are pregnant. I have two males who have gotten along for the past month in there with them. Should I take the males out? The unpregnant females?

Also, I was wondering what type of rodent makes the best family group/colony in everyones opinion?

Can hamsters breed to mice? Just a curiosity, but what would that make if they can?

The other adults shouldn't pose any threat to the babies as long as there is no shortage of food and water. I never move any of my breeders, they are in constant groups of 1.4.
The rats I do differently, but the mice always stay together. My colony very rarely has any issues with killing the young.

With mice you sometimes run the risk of an individual not being accepted back into the group after being removed for a while. I don't have this problem with mine for some reason, I can replace single females, mix groups, or even give babies from one tub to a mother in another tub with no problems, but many people report being unable to switch them around at all without getting the newcomer killed.
It may have something to do with the strains, or the way I manage my colony I don't know.
At any rate I wouldn't move any of them out unless you took out one male. It's unusual for two males to live in the company of females long term without fighting.

I didn't think the males would be able to do this either when I put them together, but I used a gradual type integration and they get along just as well as any of my females. One of the two did have her babies today though. It looks to be about 20 babies though, these won't all survive will they? The still pregnant female was laying in the nest with the new mother.

Actually they all can survive. Both females will feed the litter. There might be a problem when the second litter is born though, especially if it's as large. With a pile of 40 some can get left out at feeding time. I've lost a few babies due to this at times.
What I do now is when I am harvesting pinks for feeding and have several tubs in that situation, I take a few pinks from each tub to thin the litters down.