That is typical, but I read the OP as the 3-6k gigs were in the gear-up phase of a 10k+ seater mini stadium tour.
As far as the original Kara they are dual 8" boxes and scale well. A gig I do every year has a 2500 soft seat room, an outdoor stage by the pool and an indoor stage in a club that seats has a large dancefloor and about 500 folding chairs.
The vendor supplies all L'Acoustics and these spaces get Kara. The small club gets thre SB18 and four elements. Of course you can pumell the room but it works great if the engineers behave themselves.
The same system with two dual 18 and four elements ground stacked by the pool does great outdoors.
The K2 is dual 8" I have only ran it in larger flown arrays but I imagine it is just as flexible in ground stacks.
You will want to model each room as the speakers have "fins" on the DOSC to adjust the horizontal dispersion.
Don't let the supplier go cheap on you. You want the M-Bump and M-Jack rigging hardware. M-Bump supports ground stack and flown arrays, M-Jack levels the array.