Pathfinder 2e Character Discussion

I’m struggling to build out a Psychic that primarily uses Imaginary Weapon in melee. It is so flavorful, yet at 6 base HP per level and no armor proficiency, it feels really dangerous to get up close and personal. Sure, Warp Space amps it to be at 30ft range, but there are only so many focus points available to spend amping.

I’m looking to have this be viable at level 6 (so Parallel Breakthrough is an option). Any heritages, feat chains, or items I should look into to make it feel good to use Imaginary Weapon?