My team (two kits, two furmus, and a jocol all maxed) gets to 10 pretty much every time. (Once they got knocked out at 8 by some hella unfortunate RNG but this has never been repeated.) Sometimes they actually still have full HP because of the healing effects. If they have full HP I will sometimes go to 11, but the one time that I went to 12 they got instantly wiped by a full-tactician team, so I'm hesitant to try that again lol.
7, I have a team of full 10s(though probably not ideal attributes tbh, I've been procrastinating on reading guides) and I think I could get a bit further but I haven't risked it yet.
8. I want to switch teams though, as two bears on my team isn't exactly…great. Defense is valuable, but two of my wolves are already defense, so I really don't need more.