Sadly I cannot help you out with the paper and the viewing filters. However My filters are used only as a guide as to what direction to change the filtration. With FUJI being the only type available Kodak filters are not designed to be used with Fuji. Basic filtration can be as much as 20-30units different between the papers and the calculations suggested with the instructions for the filters and exposure compensation will be way out of kilter. They are useful but not as much as they were with Kodak Papers except as guide what direction to change the filtration,
If you have to buy paper from a dealer then I usually find MORCO near Newark are the most competitive where prices are concerned when compared with the likes of AG and Process supplies.
UPDATE
If you still want to buy a set, Second Hand Darkroom usually has them for sale around a tenner.