Am1_vf, are you asking for suggestions on how to play a pro-Circle mage? Because I tried to play my canon FemHawke as semi pro-Circle, admittedly hard to do in the confines of the game. I made her Andrastrian (and highly anti-Qunari), but not Keili level. Mostly wanting a neutral, peaceful resolution to the conflict, and putting the reputation of mages above her own desire to help them, if that makes sense. When Anders blew up the Chantry she helped the Templars try and reduce the obvious tensions that would result.
On to me and my character, I think I decided a non-Dalish elf was more likely, so I've decided on a female elven archer, (Dalish mage if available). I think both my Warden and Hawke were mage friendly so in the interest of balance, I think she, (the archer, not the mage), will be more anti-mage, possibly more open to the Qun and their ideas on mages.