Proper brawl or not there should be some victory condition apart from total defeat / concession, just to make sure neither party drags it on endlessly when it's in practice over. Thrones or not, but could just as well be thrones if you want to include them. Just set the needed amount high enough, even all of them.
So let's say 2x lvl 1 thrones, 2x lvl 2, 2x lvl 3. And you need 8/12 points to win (not easy to reach, should be easy to stop the enemy team if you have any power left). That sound good to you?
Unclustered starts is fine.
You ok with the Saildistance 1 setting for Maerland?
If those are ok, I think all settings should be covered (everything else, events etc at default)?