600 mg/ml is probably gonna fucking hurt. That's a very high mg/ml ratio you have there.
And I agree with NTO on the fluctuations. Not knowing shit about you, it's kind of hard to give advice on your actual cycle.
And instead of shooting 600mg/ml once a week, I would find a way to cut that shit down to 300mg/ml and shoot it twice weekly like NTO said (if that's what your plan is to do amount wise/weekly). If you need help cutting your gear, post in the chemical study section and people will be able to help you out.
JC