1. White Council Wizard on a Quest - this wizard feels (right or wrong) that wizards (general) and the Council (specific) should do more in the world with thier power.
2. Expatriot of the White Council - this wizard has broken ties with the council over some dissagreement and left them. He has not broken the Laws.
Any comments would be welcome in helping me decide which i should use for my wizard
If I had to chose I would go with the first alternative, but I would change it a bit to make it more flexible. The idea of a White Council Wizard who wants to rock the boat is certainly appealing in many ways and has roots in the canon. I can imagine that playing such a PC could be great fun with a lot of conflicts.
I recommend to broaden the High Concept by calling it White Council (Wizard) Rebel. Don't get me wrong... White Council Wizard on a Quest is also good but I personally would go with a bit more flavor.
Concerning you second option: depending on the reason for the break that might be a interesting choice as well. Not much to say here. In my opinion the High Concept is sound although I would make it something like "Former Wizard of the White Council" ... The cause for the break probably makes a good Trouble Aspect too.
... thats an interesting question though: How does the White Council treat Wizards who choose to break away from it's ranks? Do they all get treated like Margret LeFey and put under close observation by the wardens?