I think most will tell you that test enanthate would be a better choice than sust. For a first cycle run 500mg every week for 10-12 weeks. According to Beelzebub sust is effective if injected every other day or every couple of days. Thats what what he said in another thread if I remember correctly and the dude knows his stuff. I'll try to find it for you. Anyways point being you don't want to pin a couple of times a week if you can get away with doing it once. And if you are going to pin more than once prop. would be a better option than sust.
Edit: found this from another thread, Beelzebub quote "because of the prop ester in sustanon, you have to inject EOD. meaning, if you're going to inject EOD anyway, might as well go with prop, it's cheaper. sust is generally more expensive than enanthate as well."
Go with enanthate. That is what I am doing for my first cycle in a month.