A 39:
Not so much. FoI is still limited to your Int mod.
You can't get it really high, so I'd allow it.
Sure, you can break the action economy at 8th level, but rule that you can only take 1 additional standard and suddenly it's just a very dependable class, instead of a nova-machine.
If there's anything I'd be a bit wary about then it would be someone with Psionic Body and as many Psionic Talent as they can fit in.
Hint: That's a lot with the E6/8 system.
I'd still allow it, but that's just me.