Overdriven pulley how much is too much?

Ok, so I phoned CVF today to get dimensions and drive ratios of the pulleys on their serpentine conversion and the dimensions are as follows:
Crank 6.4"
Water pump 5.3"
This makes the ratio 1.2:1 so will be overdriven. Now I just need to get the combo all sorted out.
I'm thinking of going with the CVF serpentine conversion, 4140063 Mopar fan with Hayden 2947 clutch, Flowkooler water pump and Wizard cooling radiator with their aluminum shroud.