I wish I had remembered these things the last time I went out shooting and then editing

-- Trying to synchronize an upright correction across a set of images in Lightroom 5 doesn't work

-- If you plan to stitch, remember to put the camera in manual mode so that the exposures will be the same

-- If you plan to merge with HDR software, remember to put the lens in manual mode so that the focus doesn't change and the camera doesn't shake while it refocuses

D'oh!