Tino B wrote:
The best and most flexible option is another 2p tent.
I tend to agree and seeing as you have a nice 'neat' number of participants, it could really work well. One parent and kid to a tent and due to the kids being smaller, should be plenty of room for gear.
I have two kids who walk with me, but a husband who does not. The kids are too young to want to sleep in their own tent (unless they have a friend along) so the 2x 2p (or 1p x 1 and 2p x 1) does not work for me yet, but that is the way I will be going when they are older for sure. the 2p solution could also be used by either your husband or yourself when out solo or together, sans kids.
I was recently lucky to get a BD Megamid (aka megalight) second hand here on the forum and am so happy with it, it is huuuuge and only 1kg. With the inner that I bought for from Aliexpress for it, it will be 1.88kg, not bad for a 4p tent. I did look into the Big Agnes Copper Spur 4p as it was onsale when I was tent searching as the weight was where I was happy with it, but I was unsure re:longevity and the thing does not pack down compactly either.