I hard pressed 6 bags and got 1.5 liters out of it (same about for two triple kits), so your extract from the bags with hand pressing equaled mine with a hard press.I hand squeezed the 4 bags of skins and got maybe a bottle out of them.
I have downsized kits for decades, but recently stopped. I go through a lot of effort in getting all the right bottle sizes, and have a sea of airlocks on my counter. And when I have to rack? I expend a lot of effort in doing all the containers, and because of the inefficiencies in racking, I lose more wine.
Starting with my FWK, I'm topping to 23 liters. It's easy to do, and it greatly reduces my hassle at racking time, as I have only 1 container to mess with.
So far I've used about 1.5 bottles per kit. I'm ok with this, as I'd buy that wine anyway. It's really a matter of drinking that 1.5 bottles on their own, or blended into a kit. Either way, it goes down the hatch.