I wouldn't mix tren and deca together. That is a solid bulk cycle, I don't see any need to add tren.
Also, I prefer starting cycles w/ tren and running whatever I'm stacking it with a little longer. Tren is extremely suppressive and it makes PCT and recovery easier and more effective by having it completely out of your system before you start PCT. For example, I just ran a test/tren cycle with tren for the 1st 15 wks and test for 20 wks. good luck bro.