Personally I'm not a fan of sust as it contains both long acting and short acting esters so you get the disadvantages of each. That means you need to inject EOD to ensure you have stable blood levels but when you come off you've got to wait 3-4 weeks to begin PCT while the long acting esters clear your system.
Some guys like it to jump start a cycle where they intend to swap over to something long acting but personally I'd just frontload and save some short acting stuff for the end.
Anyway, I would say 2 a week for 3 weeks would be your best bet but it's not going to go well regardless. . .