Interesting idea you want to launch. Make it fit into your existing concept, though.
Great baked potatoes are moist and fluffy inside with a dry, crisp skin on the outside. Lousy ones are dense boil/steamed texture and really gummy with flabby skin. Hard to find one of them done great in most places. Most steak houses use what are called “potato wrappers” in the industry (pop-up foil sheets) to wrap the potatoes in and bake in large quantities before the shift. Then kept warm in holding drawers/cabinets. Same with most take-out potato places. They hold a while, but they do take on a damp, steamed texture at some point. Time depends on the size of the spud … baking is probably you best go to start. Think 350-375 for 40-75 minutes. Trial and test with knife until goes in to center w almost no pressure … then back the time up about 10-15 minutes to account for hot hold. You might could bring to room temp/chill and reheat w micro, but that is always a level of damage to texture.
Gatta ask yourself how many you expect to sell … and what is you waste plan. You WILL have some that go past quality standard for serving as baked potatoes. Whatcha going to do with them? mash, stuff, bread and deep fry? Gnocchi? Potato skins? Slice and deep fry for cottage fries? Hash? thin sliced for pizza topping (garlic oil base, bacon, spinach and sliced potato, parmesan and mozz)? Twice-baked? Give to the staff for dinner? whatever. You’ll get a feel for volume at some point, and then again, you may create a demand for your “salvage” dishes.
toppings run the gammut of all sorts … and will depend on your market. The BBQ should be good chance, think about a cheese steak potato if you sell sandwiches … the pizza one sounds good - upsell with meatsauce, sausage or meatballs sliced. “Loaded” around these parts is cheese, bacon, chives and sour cream. Places use chili, broccoli/cheese, all sorts of stuff. Golden opportunity for a vegetarian option, hear. Sauteed vegetables, olive oil drizzle, diced tomato, and you have prima vera.
My best guidance is to make it fit into your current operation and flow. You don’t want to pilot a product that needs a bunch of new products in the shop. develop taste profiles using products you have to minimize new inventory.
Just some introductory thoughts to offer.