When you say "first sust and deca cycle", I'm not sure if you mean your first cycle at all, or your first cycle with Sust and Deca. If this is your first cycle, I would save the Deca for your second bulking cycle. You can get some amazing gains using the Sust and maybe some of your dbol to kick start the cycle. If that is the case, I would take 4-500mg Sust EW for 12 wks, along with 30mg GP Dbol ED for the first 6 wks. As for the adex, between .5mg 2x wk to EOD will be enough, depending on how you respond. I have seen guys gain 30 lbs of scale weight on a first cycle like this
If you have cycled before and are in need of adding more to the stack, in order to continue to make good progress, I would run the above cycle, while adding in the deca for the first 10 wks at 350-400mg EW.