there is a template in the Psihandbook to make creatures psionic? Why not just use that with an ECL tagged on to it?
for those that don't have the Psionic Handbook or don't read the SRD here it is
Psionic Creature Template
“Psionic” is a template that can be added to any creature that does not already possess a psionic template (referred to hereafter as the “base creature”).
A psionic creature uses all the base creature’s statistics and special abilities except as noted here.
Special Attacks: A psionic creature retains all the special attacks of the base creature and also gains the following, according to the base creature’s Hit Dice.
Psionic Powers (Sp): A psionic creature possesses the indicated number of psionic powers, which it can manifest at will. The power’s level can be no more than the creature’s Hit Dice + 2. Psionic creatures freely manifest their powers but do not need a minimum score in the key ability for a given discipline. They otherwise follow the standard rules for manifesting.
Psionic Attack/Defense Modes (Sp): A psionic creature possesses the indicated number of attack and defense modes from the five of each available. The creature does not pay power points to activate a psionic attack or defense mode but freely manifests it. Psionic creatures otherwise follow all the rules for psionic combat.
Power Resistance (Ex): A psionic creature may have power resistance (PR) as noted for its HD. Power resistance and spell resistance are equally effective against both magic and psionics.
Special Qualities: A psionic creature retains all the special qualities of the base creature and also gains telepathy.
Telepathy (Su): The creature can communicate telepathically with any creature within 100 feet that has a language.
Saves: Same as the base creature.
Abilities: Same as the base creature.
Skills: Same as the base creature.
Feats: Same as the base creature.
Climate/Terrain: Same as the base creature.
Organization: Same as the base creature.
Challenge Rating:
Up to 3 HD, as base creature +1.
4–7 HD, as base creature +2.
8–15 HD, as base creature +3.
16+ HD, as base creature +4.
Treasure: Same as the base creature.
Alignment: Same as the base creature.
Advancement: Same as the base creature.
Special Note: Creatures with more than one head, such as a hydra, usually possess the psionic powers of just one creature, not many.
Table: The Psionic Template
Hit Psionic Attack Defense Power
Dice Powers* Modes** Modes** Resistance††
---- ------- ------- ------- ------------
1–3 1 1† 1 —
4–7 3 2† 2 —
8–12 6 3† 3 —
13–15 9 4† All 15
16+ 13 All All 25
*?Unique psionic creatures (such as those described in the Monster Manual) possess the number of powers noted in their entry when it differs from this value. Unique psionic creatures may also ignore normal restrictions to a known power’s level (see below).
**?Psionic creatures in the Monster Manual do gain psionic attack and defense modes as noted here, even though their entry does not mention these.
†?Creatures of less than 15 HD never have mind blast unless they are mind flayer kin.
††?Psionic creatures in the Monster Manual have power resistance (PR) equal to their spell resistance (SR), if any. Those without spell resistance never gain power resistance, even if they have 13 or more Hit Dice.
