If you would like to get into some back country to shoot some B&W that is not too strenuous for carrying gear I would suggest the Hope Camp Trail in Suarago East NP.
We just did it yesterday.
As part time locals we have a NP pass - if you don't; stop at the main entrance to get one and a map - but the trail head is about 10 miles further down Old Spanish Trail (with a left turn onto Camino Loma Alta).
The hiking trail follows an old wagon road and there are no major climbs even though you will go experience a total of 1100' elevation gain.
The "treat" is that there are two old abandoned "line camps" on the trail; which, combined with some great landscape shooting ops, makes for a nice photo journey.
Good luck, enjoy Tucson.
And damn, I sure wish I didn't have to go back to the frozen Northeast US tomorrow!