WanderingMystic
Hero
So to me the heavy ar ored str build is best fit with the Fighter archetype. You don't get the ability until 3rd level so it is not a risk for a one level dip and to be honest it makes some sense that they are using their mind to help guide their sword or arrows to hit their target.That was quick! I think INT to Hit and AC might be sending the class off in a different direction. My comments about Heavy Armour or a Mage armour equivalent are to enable a psychic warrior with Strength or Dex. If INT does everything, I'm going to focus on that exclusively. I'd still prefer an option that gives you a base AC of 13 (such as whilst you retain psychic focus, or an ability like the Barbarian's Unarmoured defence), which would enable a DEX fighter, or a Heavy Armour option for STR fighters.
Two tangential thoughts also occurred to me whilst writing this. How is Barbarian rage going to affect ongoing Psychic powers if you are multiclassed? Secondly, if Choking Grasp stays as putting the 'Restrained' condition an enemy, it would make sense to use it as a bonus action each round so that you got advantage on your successive attacks... yeah, I think grappled would definitely be better.