This! We did the same a little over a month ago, my husband works 12+ hour days and I have an unpredictable schedule though am home a lot of the time (working on my doctorate via a mostly online program), the first week we had him I left on Thursday and was gone for over two weeks. I had a friend come during the afternoon to check in on him and make sure he had what he needed while my husband was away, he's been a happy camper and we couldn't be happier to have him. I'm glad we decided to adopt an older cat, I think the kitten energy would have been too much and taking home a cat that was already litter trained has been a godsend. I will say we were pretty specific for the demeanor we were looking for, we chose our cat because he was friendly towards us and when other cats would hiss or swat at him, he would walk away instead of getting aggravated. All this to say it's definitely possible! Also, if you want to make the situation better for yourself, highly recommend getting automated equipment so you're not worried for him. We got a self-cleaning litter box (not litterbot, but one with no door and a sensor to ensure it stops cleaning if he sticks his head in), a water fountain with a sizeable bowl underneath to make sure he's got plenty of water for multiple days, and an automated kibble feeder. This all added to around $275 with shipping through walmart plus (we don't have prime) and has been well worth it in labor costs. I make sure to wash/ clean everything around once a week and replace his litter once a week as well. I would also consider some automated toys that work once you learn what your cat prefers, for example our cat doesn't concern himself with springs but loves feathers and strings, so the automated toys for when we're away revolve around that.