Your already stacking a gram of test with deca. Why do you ask if you can stack test (sust) with deca?
I took 500mg/week omnadren (read sust) for 6.5 weeks. (Had to cut my cycle short for personal reasons unrelated to side effects or complications.) It was my first cycle, at my peak weight I was up 24 pounds from pre-cycle and my strength was awsome. Just finished clomid, my strength is still a good deal higher than pre-cycle, and think I have stabilized at 11.5 pounds bigger than I started. (Not bad for 6.5 weeks) On the down side, near the end of my cycle I got some nasty body acne, my hair thinned out a bit, and my face started to look bloated. I couldn't have cared less about the bloat, but the hair thinning was not good, and the acne sucked ass!