Marius Asa monk.psionic fist

would like to change Trait from Reactionary to Psionic Knack, gaining new PP, and 2 more psionic abilities - 2nd level - (Strength of My Enemy, and Body Adjustment )

Exchanging feats - dodge, improved Trip, and imp two weapon fighting, exchanged for Grapple Style, Grapple Drag, Grapple Master

Where did you find that trait? Because I'm not sure it's legal.

Also, I presume you mean Grabbing Style, Grabbing Style and Grabbing Master

I just looked on our character creation page and the Trait: Psionic Knack does not come up. This means it is not added to our chat. The trait looks like it is coming from: Psionics Expanded: Advanced Psionics Guide which is not a sanctioned book for this chat.