Need Help with finding a top notch springer for small game

Great choice!
Yes, the Napier pull through is the same as a crown saver, it's a heavy cord in a plastic tube with a T handle and will not damage your bore. Break free should be fine, use enough to just moisten the patch. Pull a wet patch once or twice then switch to dry patches. Usually H&N ftts shoot well in the HW guns.
Good luck and have fun!
John

 Yes, a set of gunsmithing screwdrivers are a good idea. I looked at the kit you listed, looks good. I have wheeler gunsmithing screwdrivers, it was inexpensive set and does the job, this is the least one should have who works on their guns. http://www.ebay.com/itm/Screwdriver-Wheeler-Gunsmithing-Tools-Space-Saver-/262239228682?hash=item3d0ead130a:g:XdgAAOS