Newbie here 2016 Prius 4

Hi;Everyone
New to the Prius world 2016 4 Blizzard Pearl.,currently drive a 2012 Corvette and a Toyota Tacoma got both up for sale and hoping to make the Prius my only car.
What a difference still haven't go into the Prius driving mode only getting 51.5 mpg where the PO got 54.6mpg.
I think I'm still driving the corvette.
Got a ton of questions but the 2 that are on my A list are the NO spare tire,looking for a way to get a spare under the rear deck,and the fact that I have hubcaps over alloy rims,unfortunately the PO painted the hubcaps black and got over spray on the alloys
.
Looking for suggestions on the way to get a spare under the rear deck lid( Donut tire or regular) and how to get the over spray off the alloys.

Thanks for listening
Bill