all you need to know :
http://forums.steroid.com/showthread.php?t=344896
Welcome to AR
Steroids are not for you at this time. If you can't gain off of your diet and training now to get to your NATURAL POTENTIAL (meaning a weight that more suits your bodyframe of 5'10" which about 190) then chances are whatever gains you make using steroids will be lost after your done.
Steroids are not magic, they can't create muscle out of thin air, they need EXTRA good diet and FOOD + Heavy lifting in order for them to do what they do.
ALSO, there is NO benefit to using Sust or any other multi ester Test. unless you enjoy injecting ED or EOD. TEST is TEST, if you go with it, go with a SINGLE ester and you only have to shoot twice a week
ALSO, ALSO, there is more to this then just sticking steroids in your body, you also need to know what else you need during , and after your cycle to ensure your health and to keep gains and not get a limp willy and man boobies