I really enjoy this story. Update soon and often.
I've watched both SG1 and Harry Potter and by the way you write I found I could hear they're voices saying the lines. The banter between Daniel and Jack is hilarious. Well done!! I look forward to seeing more of how the SG people and the Hogwarts staff interact.
I like the way you have integrated the Ancients into the Wizarding Society. I would like to hear Daniel/Harry describe being ascended from a magical standpoint and not just a 'muggle' version from the show.
Keep up the good work.