I love those backgrounds!!!
I have only been able to get ahold of one CCS 
background that wasnt part of a cel, and thats my
"Twin Card" one, which is 3 feet long and 1 foot 
wide and thus defeats my scanner.
The studio put a enourmous amount of artistry in 
to them.
And the "Fierce" cels of Sakura are great as 
well.
Congrats on the aquisitions!!