you might do one floor at a time. to minimize disruption. depends on
bathrooms etc...

I can remember when wall to wall was DELUXE and sign you were
affluent...

The pendelum has swung, now its hardwood..

Frankly carpewt is warmer quieter and less hassle.

you might get a couple rooms refinished then decide if you want to do
the entire house, it also gives you a place to store belongings from
other rooms.

of course you could cover everything with pre finished fake hardwood,
thats easy to do one room at a time.

you existing floors may not be in the best of shape

locally there are contractors who are low dust....havent tried them
myself I like carpet....