You can use spell-like ability feats (because the XPH says flat-out that you can use them on psi-likes, and that psionic powers are, point-blank, psi-like abilities).
As far as Hyperconscious goes, it was written by Bruce Cordell (who also wrote the XPH), so the only thing that's 3rd party about it is the company that printed the words on the paper and distributed it.
Fairly sure this doesn't exist.
Not so fast there, pardner.
If you want to use metamagic feats on your powers, you can take the mantled erudite (or mantled wilder, or mantled psywar, or ardent), with the Magic mantle. They technically still don't work due to incompatibility of mechanics, but metapsionics has a standard power point conversion rate of
([spell level adjustment*2]-2)+expended psionic focus.