Yeah you can mix sust with Tren ace since they are both oil based when you inject. I would drop the deca unless you feel it is supporting your joints really well. Deca is a 19-nor and so is Tren so It will shut you down pretty hard, save the Tren for your next cycle. If you wanna cut a little in this cycle lower your calories and go with winstrol, since you got the deca already for joints it will benefit if the winstrol dries up your joints. Run the winny at 50mg ed for 6 weeks.

What do you mean when you say.."shut you down pretty hard?"

My only issue with winstrol is that you need to take it every other day.. that too many injections. I have a nurse do these for me... I can't go over there 4 times a week... it gets to be expensive too...

He means it will suppress your own test production, kill your libido and delay your recovery.

If you mean both in the same syringe, yes. If you mean both in the same cycle, considering you are already taking deca, yes but it will shut you down harder, and perhaps that's not what you want.

Adding Tren will not make the bloat go away.
P.S. learn how to do your own injections. It saves money.

Yes, these guys are right. Deca and Tren together could get very ugly.