Has a licensed professional told you if that is or isnt a load bearing wall you want to remove?

Slab construction? Typical 70's rancher with alternsting direction for ceiling joists? That wall likely IS bearing sone load, even if it is no more that the weight of the ceiling.

You can certainly get a better kitchen layout, but this is no cheap or easy renovation. Jackhammers and structural beams are in order. The results depend on you flipping the kitchen to the breakfast area, putting in shorter windows in the bay, putting your sink there, and moving the dining to the current kitchen.

Or leave things alone and invest that 100K into a move up house.