If it was my money I'd have an hour with both of them and keep the rest of the cash for another day.
I'd concur with MrFf about testing the waters somewhat and saving some of the folding stuff.
You may (like i have) find yourself going through it quite quickly!
Not seen Kate but if you're after a sensual GFE (as opposed to a no holes barred porn fuck fest) I'd say Olivia could well be right up your street.