Also, Jeff, whatever you come up with, when you get close to your time and temp recipe, shoot a set of negatives at a blank surface, out of focus (no distracting detail), and expose to place the value on about Zone 7. Process them all together and contact them, together if you can, on about a grade 3. It will reveal differences between negs, uneven development (which you might not see with busy images), and surge defects. I thought I had a good combo once with testing, then took a trip to New England, shooting in the fall near the sea, lots of open sand and sky. Many of the negs had uneven skies, etc, which did not show in testing images of my back yard. It's kind of an acid test, IMO.