Silage special, or haylage balers are much much heavier. A 4x4 dry weighs about 400-450, and the balage can go 1000 or better.
a 4x4 unrolls to about 11-12 small squares, a 4x5 unrolls to about 20-22 small squares.
Horse people want DRY hay period.
Net wrap is much faster to wrap, 2 turns of the roll in the machine. Twine can be 15-30 turns depending on one or two twine system.
Small squares sell for the most, end of story. Quality in the hay sells more than anything else. You do not save anytime rolling vs small squares, but you can do it all from the tractor seat.
Storing rolls outside is not difficult if you want to keep them dry. Buy the right sized tarps. Put plastic on the ground, skids on the plastic, 6 bale pyrimid of 4x4 bales. Go how ever long your tarps are. Put ropes or big square baler twine under the skids to come up and tie to the tarps. Other than the end rolls and what you do to cover them, the bales are just like stored inside.