My house, though an older ranch style, has a front living room that opens into the kitchen/dining area, and an enclosed carport off the kitchen.
I use the front, original, living room as a "formal" room, meaning TV free, clutter free. It is a good space when I entertain as it flows into the kitchen/dining area, which open onto the back patio. I can "contain" my guests in the one open space.
The enclosed carport I use as the family room. TV, electronics, toys, clutter all stays in there. When company comes over, I can close the door to it and Viola! instant clean, entertaining space. Plus, when my son has his friends over, I can contain the teen boys in there and still have a nice living area for myself.
I really like having the front living room TV free - it gives me a space to curl up with a book or visit with friends without distraction.
Play with it once you move in. See what spaces flow better for your family, and which room(s) they gravitate to more. That will help you decide which room to use for what. You can always re-arrange and re-direct the use of rooms.
Have fun house shopping!
God Bless