Hey bro, depends on how long your cycle is going to be. It’s not ideal to wait on adding deca since it does take so long to start working. Thats something you want to get in from the start so you can start to see its effect sooner. I feel it takes me about 5 wks to start seeing results from deca. If your cycle is any shorter than 10 wks, I would suggest waiting and using something else. How about some NPP instead? That said, you will still get something out of it. Its just ideal to start it early. At the least, run deca for 8 wks