I fostered a mama bunny with 6 babies- 2 boys and 4 girls. ( Original enclosure was a 5' by 6' pen)
At 10 weeks, I had to separate the boys from the mama and the girls. This meant there now were 2 enclosures to house them - 5' by 6' original pen and a separate 4' by 4' pen.
At 12 weeks, the boys were neutered and the mama bunny was separated from the baby girls and was spayed. 4 enclosures- a separate cage for mama, a split pen for the boys and the original enclosure for the baby girls.
At 13 weeks mama bunny was no longer on cage rest, so a new pen was set up. The divider was removed from the boys' pen. 3 enclosures - 2 pens 4' by 4' and the original 5' by 6'
At 14 weeks, the baby girls weren't ready for spaying, but they began to fight, so their enclosure was divided with 2 girls on each side of the divider.
At 16 weeks, 2 of the baby girls were spayed and each needed a cage set up. The remaining 2 girls began fighting, so they occupied the original enclosure with its divider. 6 enclosures- 2 exercise pens: one for mama, one for the boys; 2 cages for the girls on post op cage rest; and the original, now divided enclosure.
Since I was fostering, bunnies began to be adopted at this point, so I didn't have to continue to add additional enclosures.
My point is that once the babies reach adolescence, you may find yourself needing to set up several separate enclosures to house them. After they are spayed and neutered, you may be able to re-bond them, but you may not be able to re-establish the single family unit. You could end up with 3 pairs and a single; 2 pairs and a trio; or with your original pair and 5 singles (just of few of the many possibilities).
Until you have re-bonded them, you will have to house them separately and figure out separate times or areas for free run/playtime.
Do you have space/time/energy to maintain that many separate enclosures?
