A word of caution - The old Kentmere papers were made in Staveley, Cumbria. Since the Harman takeover, all the coating is now done at Mobberley. It is quite likely that changes to the formulations occurred in 2007 that affect the lithability. That said, the Fineprint papers are fibre based, so should last longer than the RC stuff.

Without trying a few sheets, you will never know. If the paper is unresponsive to a first pass lith, then try bleach & second pass lith.