you will see results from 250mg/week (i'm hoping you aren't really considering injecting 250mL of test per week). 400 mg/week would be great, 500 would be better. if you have enough or don't mind getting a little extra, up it to 500mg and do at least 12 weeks. you'll really enjoy 12 week at 500mg. you only get one first cycle. make it count.