by MrRiley
If he can use his abilities at home, mind reading would be good to ferret out any secrets he can use as blackmail
I think Invisible Hand is the strongest pick out of all of those. It has endless possibilites. Buttons, levers, switches. Buckles, buttons, zippers, clasps. Telekinetically controlled daggers. Useful in and out of combat. Plus, telekinetically groping someone from 5m away would never stop being funny.
For the second question, I think the stepsister deserves some comeuppance.
I absolutely hate that you ask the readers to choose, it seems like you don't really know where you want the story to go, so you choose the lazy way out.