wlecome to the board bro. you should listen to the bro's and sis's here. they know their sh*t. and bro for your first cycle you should try to keep your as at a low dosage. because you would up your bodies imunity to the 600mg you were thinking about. then the next cycle to see similiatr results you would have to go up to 800mg. now there have been proven results or personal testimonies that for a first cycle at 250mg per week of sustanon250, gains have been as good as 30 pounds in 10 weeks. chili on this board says that he had the same results. look into some of this info bro.