[Psionic Powers] Psi version of Banish Spell

[binn05]

For my psionic DF campaign, I'm creating a Banish ability similar in concept to the banish spell.
I saw other people use Jumper and Warp to simulate the Banish spell with Sorcery rules, but as per Powers, p118, it says I can design the ability using paralysis and extended duration.

I a little confused with I design it the right, so if anyone can check my design, I'd appreciate the help. :D

Banish
Concentrate for 4 seconds and roll a Quick Contest of Wills against your foe. You must touch his skin and keep contact with it during all the concentrate maneuvers. If you succeed, it cannot come back to this plane until a week has passed. If it resists, you can only try again after one day has passed.

Banish
Affliction 1 (+255%) [35,5/level]
Paralysis, +150%; + Extended Duration, 3,000x, +140%, 1 week, per Powers, p118 - I changed the Permanent for 3,000x to better fit the concept.
Based on Will, +20%;
Fixed Duration, +0%;
Malediction 1, +100%;
[+410%]

Acessibility, Only on Extraplanars, -30%;
Contact Agent, -30%;
Cost Fatigue x4, -20%;
Increased Immunity 3 (1 day), -30%
Melee Attack, C, No Parry, -35%;
PM, -20%; - a modified version of the PM from DF14.
Takes Extra Time x2, -20%;
[-155]

I'm building it with levels similar to Psionic Powers abilities. Level 1 needs to touch bare skin. Level 2 any contact will do. Level 3, ranged as per Malediction 1. Level 4, Takes Extra Time 1, Level 5, remove TET.