We typically have 2-3 people and 2 golden retrievers on our Ericson 35-3. It can be a bit cozy and depends on the behavior of your dogs. We have cruised for up to 8 days living on the boat. As long as you can keep the energy levels down and are organized about boundaries, it can work well. The biggest "lift" is getting the dogs in and out of the dinghy when we are on mooring or anchored. That can be a bit of a challenge at times...
You can see some of our experiences cruising with dogs at
https://www.youtube.com/@sailingcardinalpoints, particularly the Penobscot Bay and Mount Desert Island videos.
I don't have any experience with an Ericson 26-2 or Ericson 28. The biggest adjustment between boat sizes for me is often not the size, but the displacement (e.g., momentum, quickness of response). Our Ericson 35-3 is very maneuverable when turning and I would think that would be the same for other Ericsons, but there is an extra sense of heft, particularly when transitioning from forward to reverse and vice-versa. With larger displacement, you need to keep that in mind and tactics when entering close quarters.
Happy to answer any questions and good luck with your search!
Dave