propionate 30mg (2 days)
phenylpropionate 30mg (4 days)
isocaproate 60mg (9 days)
decanoate 100mg (15 days)

In parenthesis, you see their approximate half lives. It is no coincidence that each ester is roughly twice the quantity of the one before it nor is it coincidental that each half life is approx. double the length of the one before it.

relax knowing that as the propionate fell off, the phenylpropionate would begin and as the phenylpropionate fell off, the isocaproate would begin, etc, etc.
500-1500mg once every 8 days. This would allow for it to take immediate effect and with a few additional amps of propionate, you could use it with predictable stability right up until a few days before starting PCT. This dosing regimen combined with equipoise or nandrolone would be a very productive cycle.

Refs: any Sustanon package insert