a few Questions/concerns

[Sanhestar]

first, I wouldn't pack (as in let them carry loads), yet. They are in my opinion way too young to carry something on their backs.

And then, yes, they are in the middle of puberty. But (!) if there are some in the group that can't work well together (it's the same with people) this won't get better with age.

Right now it's rutting season, too, until end of spring so this can add to your goat's eagerness to fight.

Observe the ones that fight on the trail at home. Do they pick at each other then, too? Can they stand next to each other at the hay. Who gives way to whom? Who will always bully whom? Which goats are resting next to each other or like to keep company.

Depending on how they interact at home - assuming that you bought them and "threw" them together in a herd - you might have to sell some. Also, the youngsters often benefit from the presence of an older, mature wether. Left to themselves, they are a bit young to work out a working hierarchy without help.