You’re already asking good questions, which means you’re doing a lot better than many of the people who adopt without thinking. You’re also looking for an adult cat, which means you aren’t going to have to deal with a kitten’s destructive exploratory phase (although, fair warning, adult cats can still be destructive if you don’t prepare properly).

One thing I would say is that you should consider two versus one cats. Some cats don’t handle being alone for a long time well and can become unhappy, while others prefer not having feline company and would be just fine alone for ~48 hours. A good shelter or adoption agency may be able to tell you whether a cat prefers company or solitary.

Like some other commenters, I would strongly suggest going to local shelters and discussing with them. They should entirely understand if you aren’t able to adopt immediately and be able to discuss particulars with you.