If someone served me a very dark roast of coffee, I would be very disappointed. It tastes burnt. I wouldn't say anything unless asked, but I wouldn't want a second cup.
BTW, we really like the Lavazza coffees. There isn't a huge difference between the more expensive Oro and the Rossa. Haven't tried the "Espresso" 'cause I think it's dark, but the other three are all nice.
Since there is a Lavazza store, maybe they sell freshly ground coffee beans. If so, you could get smaller quantities of the various kinds. I wouldn't bother with both Rossa and Oro, just one or the other. I am assuming that you have an espresso machine and will be making individual servings of coffee.
May you live as long as you wish and love as long as you live.
Robert A. Heinlein