You can base a KS on INT, but that is still a Knowledge Skill; the Power Skill is specifically for things like VPPs.
This is the "I can do anything, any time" Green Lantern/Quasar hero. His Novice Hero and Code of the Hero Disads kind of balance him out, but...
I don't know about anybody else, but I see ALMOST BROKEN written all over this Character. Apply a -1 Limitation from a few minor limitations (Gestures & Incantations come to mind), and you can have 70 AP of FF, a 14d EB that can have the precise SFX for the other guy's vulnerability).
I've had players make this sort of character, and it always throws the campaign on it's side. They outshine everyone, get all the limelight, make it extra hard to develop plots; then the player can't understand why nobody else wants to play the campaign any more.
That being said, Green Lantern, Quasar, Silver Surfer, Captain Mar-Vell, and the other Cosmic Wielders are among my all-time favorites!
That's a great character concept, just dang nigh impossible to curb the player in - the whole Pandora's Box thing...