My kitchen WAS the back porch. It is 19 feet long and 9 feet wide.. The waterlines are UNDER it. When it gets to single digits in the winter I have to worry about frozen lines - too shallow to get under to install a heat tape and they did not insulate houses in 1912 - definitely no porches.
Thr outside wall has, starting from the back - the closet with the water heater, the washer, the drter, the fridge, 1950s double sink with side drainboards, stove (was a beautiful 40", now wimpy 30" with a butcher block pullout stoage drawer - custom made). Then I have a counter that is about 24 inches wide that fills the corner and comes up the side to the side door to the deck (small). Himself kept all HIS stuff to cook his meals there so I got used to working my breakfast magic on a space about 18 x 24 inches. Te wall opposite the stove has a space heater - required - and a custom-built sideboard - that also held his stuff - I have partially reclaimed that, but now it holds wine bottles and fruit. So yes, you will be able to work around a lot, but even if I were pining for a dishwasher (cannot have due to my Fostoria and other antique dishes) I do not have room for one. The kids blessed me with a freezer that would have been the space - I lone the freezer! IF there is space - a freezer is wonderful.
When OJ is on sale - it goes in the freezer, my berries in season get frozen for winter, I just bought another pig (the one from last year is almost gone), and unfortunately, it seems I am also out of venison and they did not get me one in November. CRAP!! When bacon was on sale, I bought it for the freezer. Saves a lot.