Once the pecking order is established, they should be ok as long as nothing upsets the pecking order. Unfortunately there's quite few things that could be enough of a change to potentially upset the pecking order. Lack of food or water, introduction or removal of one of the flock, change in amount of light, hormonal changes, etc. Basically they are fine until they aren't. Quail fights can be vicious and bloody. Keep an eye on them and hopefully they will be fine.Yea, sight definitely matters. The sole male and one of the paired ones will fight verbally i.e. loudly call at each other if they can see each other even if they're in different cages.
If they fight to establish a pecking order, does that mean they'll calm down once said order is established?
I've now moved two of my males into my lower cage with the female that was previously there out of sight in my transport cage. My higher cage is right next to the lower one, but because it is higher up and has a rather tall bottom there's no visibility from the lower cage.
Since I've put them together, the two males have scuffled occasionally, but seem to have calmed down considerably already. I'll continue watching them so I can intervene if necessary. There's a little wooden house in that cage that they can escape into/onto if they need to get out of each other's way, too.
Giving both the females to one male isn't optimal, but having to leave one male all by himself wouldn't be great either. Here's hoping this works out.
Do you mind me asking why you want to keep the extra males rather than rehoming or eating them?