My chaos mage went ucas-denver, fugitive, magical education, skip higher education, wage mage then street mage. That gave me a +3 INT, +3 WILL, +1 REA, +1CHA, +1 LOG. My Sorcery and Conjuring pools were both 5 (conjuring could have been 6, but I opted for a different choice during magical education). That cost me 305 karma.
I think going shaman might work quite well, depending on what you want you back story to be. Go Tir (+1 CHA), Corp Drone (+1 LOG, +1 CHA), Magical Education (+1 WIL, +1 CHA, +1,Sorc, +1 Conjure), Community College (+1 LOG, +1WIL, +1 Sorc), Wage Mage (+1 LOG, +1 INT, Sorc +2, Conj +2), Street Shaman (+1 WIL, +3 Conj, +2 Sorc). That brings your WIL to +3 and your CHA to +3, Sorcery group is 6 and conjuring group is 6. Total Karma 360. From there you can add either Postgraduate studies which increases Cha another 1, and 10 points to whatever magical skills you want to get them to level 7, and get more LOG and INT, or you could go with tour of duty (TIR) which would raise conjure and sorcery skill groups both to 7, and increase your AGI, STR and LOG all by +1. Either way total Karma is 460 (and worth it, but still expensive)
As was said previously, the rules state that you can only take each life module once, but does not specify if each of the street magic options are considered individual life modules or not (I am inclined to say they do count individually). In that case I would skip community college and not get post graduate studies, and skip tour of duty, instead opting for another street magic, probably occult investigator as the would make your Sorcery and Conjuring 7(you would actually be losing one point in sorcery, due to cap being 7. You could choose enchanting and conjuring at the magical education phase, though, and have a +2 on enchant group) . All of your magical skills would be pretty dang high, but overall your LOG would drop one point. Karma cost would only be 305.
