Post a to scale floor plan after you have found out if you can remove that wall and what it will need to be able to do so. I think you need to also inform us of appliance choices and their sizes the height of the ceiling ,all windows , doorways and measurements marked clearly. Make sure the drawing is done on graph paper show scale and tell us if plumbing can be moved Also electric stoves are really a dated item and if at all possible either go induction or gas. Induction will require your electrical to be able to handle induction. Many thing have to be considered when making major changes in a home. How many people need to be seated in the new dining space ? How many people cook at one time .I am not really understanding the part about the MIL suite and how that figures into this plan. Actually a whole house floor plan would be a huge help.

Seems like what you need most is an opening from kitchen to living room.

I think you would regret taking that wall out between the kitchen and dining room, to me, I wouldn't want to be able to see into the kitchen from the dining room table, especially if having guests over for