With this combo, the only thing I would look at is the potential for prolactin issues when you make the switch from deca to tren. Deca will stay in your system for a long time. I would give yourself at least 2  wks off the deca before tren, if you want to be safe. Really, the deca will be active longer than that but it will be lower then. Outside of that, I actually like the EQ in the background of a longer cycle. I tend to like NPP for the first 8, then tren the last 8 for a 16 wk cycle.