If you have space to set up an enlarger, forget the scanner. Question why you might want to digitise in the first place. If it's to archive, just keep the negs. If it's to share the best images, print them and if you must, scan on an ordinary flatbed. Certainly for B&W the best prints will come from traditional wet printing rather than scan neg + print (unless you spend big numbers). If it's to visualise what you have on a strip of negs, just print some contacts. If you have money to spare (!) instead of a scanner perhaps look at an f-stop timer/analyser like the analyser pro from RH Designs (now sold through SDS). Expensive, but has the capability to virtually eliminate the test-strip process to determine exposure and contrast (although you should still learn how to do this).