Think about the natural workflows later in the house. Especially when it comes to the switches, this helps immensely.
Print out the floor plan and simply mark sockets and switches everywhere, as if it costs nothing. This will make you think about some things and how you would like them. And then you have already thought about it instead of standing at the electrician and saying: "We don’t know yet. We’ll get back to you on that."
Otherwise, pretty much everything has already been said. What I can also recommend is to take notes if you make any changes based on the electrician's suggestions. Of course, you will receive the plans after the conversation and then have to approve them, but they are partly not easy for laypeople to understand. And depending on the electrician, there can be a few weeks between the conversation and the plans.
Simply because of all the different symbols and then sometimes you no longer know why something was changed.
Also consider exterior lighting or possibly keep future Christmas lighting in mind.