Everything's looking pretty good to me.... diet, training.... I'm no expert but it looks like you're fairly well on track.
Creatine worked really well for me.... I can't afford it anymore, but when I did.... my strength sky-rocketed. Don't recall putting on any noticable size, but I probably wasn't eating enough. So I would go with the creatine.... I don't know anything about L-Glutamine, so.... I'm not sure about that.
But yeah... just eat a lot, train with perfect form, every set until failure, lift heavy and don't do too many sets.
7 weeks isn't long, but make the most of what you've got. Good luck.