Here is another observation .... But before I chime in , think
Bore Snake and you clean all from the breech .
Cost; The Sharps is arguably the cream of your list and cost accordingly with originals in the stratosphere.
Rolling blocks are next ... though good shooter grade originals can be had in 43 Spanish etc.
Good to very good 73 Springfield Rifles are inching up but still can be found under a grand
expect to shell out $1800-2500 + on Replica Sharps .... maybe $1300 - 1800 for the Rolling block
and if dig $750 -1500 on the Springfield .... good luck in your quest