The wiring for a remodel is the straightforward part. The decision worth making early is what else to do while you can see the framing, because the same work costs several times as much once the drywall’s back.
In the older houses here that usually means three things. Ungrounded two-wire circuits, which are everywhere in the pre-1970 stock and are why half the outlets in those houses are two-prong. Aluminum branch wiring, used in some homes built between roughly the mid 1960s and the early 1970s, which needs specific connections at every device rather than replacing outright. And circuits that have been extended one too many times, usually to a porch or a garage that got finished later.
None of those has to be dealt with. All of them are cheaper now than they’ll ever be again.
The other thing that catches people out is capacity. A kitchen remodel adds circuits. An addition adds more. If the panel is already full or the service is 100 amp, the remodel is what tips it, and that’s better known at the planning stage than discovered on the day.