@Apple: Well, if he's an inventor you'd obviously want your core stat to be INT. Wisdom is up to you - it does increase perception, which is good for an inventor(making and reading plans, seeing small details) as well as allowing you to think ahead a bit. Without it you become a bit of a
Bumbling Professor archetype.
Dexterity is also probably a stat you want to invest in - from a thematic standpoint it would help him actually
build the stuff, and from a gameplay standpoint it's likely where your combat prowess is going to come from. Strength is probably not necessary, nor is Constitution. Charisma might be low as well, but again that depends on what sort of archetype your going for.
Basically, INT and DEX are your two main stats. WIS is a possibility, and STR and CON are probably your weak stats. CHA could go either way, but in a setting like this I wouldn't write it off. As far as CM, your major is probably INT as well, and one minor should be DEX. The last minor depends on what sort of personality you want.
As far as skills go? I'd have to see the list... I don't seem to have it on me at the moment. Precise telekinesis is probably in your future, though.
(Note that these are just suggestion for how
I would build a character like that. Feel free to completely ignore them.)