We don't currently offer a larger model. But you can prepare concentrate in a few minutes before the arrival of guests. Just press a couple of triples (3 scoops each) and put it aside. Then, after dinner you can dilute the concentrate for American coffee, add milk for lattes, or offer straight concentrate as a very smooth espresso.
You can also press some concentrate and take it to work in a small container. Then dilute and drink it at work.