The Jamerson 5 string set is .052 through .128, and will be much
stiffer than you are used to with your super slinkys. To get approximately the same tension, I'd consider Sadowsky Black Label Flats in teh Light set: .040 through .125. Flats are stiffer than rounds, by an order of magnitude, especially when compared to super slinkys, so you really want to go at least one set lighter than you are using now, maybe even more.
For the best prices and service, I'd go to Bass Strings Online
. Jason (the owner) is a supporting member here, and is really
good to other members.