With the drafts, you can then continue in Sweethome. The placeholder 3D models are simply too inaccurate, and when planning a kitchen, it should actually be accurate to the centimeter.
Just a tip. You can "store" the microwave above the oven in a separate wall cabinet with a lift-up fitting. This cabinet then has no back panel at the rear. Behind it, you can then provide the sockets for the microwave and stove and have good access.