Start at total amount of compounds used at 5-6mg per kg. So if you are running 3mg per kg test(270) you gonna use 180 deca. Then make increments from there.
If I was you personally, I would start with deca masteron e and test cyp. 2mg per kg of each to start. Then when Then go up with 1mg per kg after 5 weeks. Top out at 11mg per kg. But don't allow your test to go above 3mg per kg. So the last 5 weeks essentially you would be running 4mg per kg deca and 4mg per kg masteron e and 3mg per kg test.