Woah, is this a question asking if I want to become the god emperor of man? Anyways, this has a rather simple solution. I'll get a job being the guy who administers the poison to people on death row. It's still technically murder, just murder administered by the state, and since I'm the one directly taking their life by executing them, I get years extended onto mine. Then eventually if the Death sentence is gotten rid of, or I just get bored of that job, I'll use my immortality and telekinetic powers to become a super hero and kill wrongdoers. I mean, not all the time or with killing every single one, but as long as I get one guy a year for as long as I feel like living, I'm covered. I'll probably try to be Batman or something, using my extended life at peak physical condition to learn martial arts and immortality to be bullet proof and whatnot. The added benefit of seeing into the future or something like that would just be icing on the cake. Maybe I'll just join the army and be an awesome sniper that can curve bullets or something with my mind.
Although this sorta hinges on the specifics of the immortality and telekinetic powers. Like do I just live forever and am still weak to being killed myself, or am I like Highlander immortal, where I only die if certain conditions are met. Also what kind of telekinetic powers are we talking here? Can I just read minds or see the future, or are we talking full-on psychonauts? Cause if I just can read minds and can still be killed normally, then I'll stick with the executioner job, and make all the money I could possibly want being awesome at poker with whatever basic telekinetics I get. Or maybe win the lottery, I dunno.
Oh, and one more thing, do we just drop dead once we go a year without killing, or do we simply cease being immortal and start aging again and lose our powers? Of course there's also the question of whether we can use our powers to kill people with only our mind. Like can I just blow up someone's head from across the room? Across the country? Or do we have to do it manually?