Might want to look for kitten/young cat that is gentle natured and laid back. That might reduce some of the initial friction. Be sure to neuter as soon as possible. Expect to have some hissy fits and territorial issues for a while but generally it should subside in a few weeks as they work it out. One of the funniest things I ever saw was a few weeks after we brought in a female kitten who loved to play and just pestered our older tom cat. One day he pinned her on her side and just sat on top of her...wouldn't let her up. I couldn't quit laughing. They worked out their relationship and did great.
Separate litter boxes and feeding bowls near each other might be good to start. Our cats always ended up sharing eventually.