Retired lawyer ... can't be hurting for $$$. Keep in mind that you'll never see this guy again and you should never have let him in in the first place !!

Now then, tell him:
a) you have till the end of the week then you're out
b) rent a car
c) hire movers and have everything taken to The Salvation Army (charity don't usually pick up)

FWIW, renting a storage unit is just throwing good money after bad. As you see on many reality shows, the contents are rarely worth the rent owing !! Besides, he's moving to Cali, what's the chance he'll come back for anything!