Several years ago, when we moved twice in 6 months while our new house was being built (first into a much smaller temporary townhouse and then into our new home), we had to put a lot of our belongings into storage for a few months.
Our 2012 S P85 (RWD) was used to move a lot of our stuff - and with the rear seats down - it was amazing how much we could move in one trip, including using the larger (than current) frunk and the underneath storage in the rear.
We only needed to use a larger vehicle for a few items that wouldn't fit in the S.
Our 2017 S 100D still holds a lot - but the frunk is smaller, so we would lose a little of the cargo capacity in that space.