Hey - there is a good bit of info on ADM, including a megapost from last year all about them.
I found them to be good overall. And the staff are really friendly, and do geniunely go out of their way to help you.
And don't believe this "I didn't actually fly at all but they gave me my IR bullsh*t".
AGP is extremely busy at this time of year, which is excellent practice!
I knew people who took a few extra. 15 hours would depend on you and your currency/experience.