Admittedly, it does seem overpowered, but like I said I have to see it first.  The force blast seems a little strong though, since if I'm reading it right it's essentially 2d6/level with no limit to how many times you can use it (1d6/level from item size, 1d6/level from leftover distance, with the ability to crit).  Plus being able to shove people around with Mental Strength, which if I'm reading it right will also let others get opportunity attacks against an enemy you're pushing around, as just a move action, seems a little off.  Like I said, I'll let you try it, but I don't want to be backed into a corner and not have the option to veto it later.