I agree, cats are amazingly adaptable and versatile. Always best to have two that get along, so they're not always alone, but one works.
Make sure you know somebody reliable who can feed/water/hang out with the cat while you're away. Make sure you ADOPT!!! Adopting an older cat is one of the coolest things a person can do- doesn't have to be a senior citizen, but everybody's always looking for kittens. Which is dumb, b/c kittens are kittens for less than a year, then they're cats for at least 15 more. Although cats can ACT like kittens for many years.