It appears that I inadvertently picked a spectacularly bad time to open up for commissions. It ended up taking a week longer than I'd expected to get my computer back up and running, during which I didn't have access to Photoshop at all. And then right after that, a coworker went out for surgery for two weeks at work. I ended up getting scheduled to work seven days a week between my two jobs, without a day off between the 2nd and when my vacation starts on the 28th. Once you factor in my commute time (80 miles round-trip, and 100 miles on days I work both jobs) and you're looking at four straight 70-hour work weeks.
Since I really don't know when I'm going to have time to regularly manip this month, I'm going to go ahead and close for commissions again until October. No sense taking on work that I know I won't be able to finish in anything close to a timely manner. I should be able to reopen again once I come back from my family trip.