Just remember this restriction on Psionic Body. It's from the E6 variant rules stuff from here on EN World. I may have mentioned this earlier, or I may have forgotten.
The hit points you gain from this feat cannot exceed two times your psionic class's key ability score modifier (Intelligence for psion, Wisdom for psychic warrior or if you used the Wild Talent feat or a racial ability to qualify for this feat, and Charisma for wilder). If you have multiple psionic classes or key ability scores, use your highest key ability score to determine your benefit from this feat.