I see a lot of different opinions but not sure of what your goals are still.
EQ is a derivative of test, so lessen the test if you use EQ anything over 600mgs week is not going to do anything new
If Deca is the choice anything over 400mg week you should add test- I never went over 400mgs a week and never added test and never had any issues-ever
You will need something to kick start it
Cyp is a good addition or short acting like Presser mentioned propionate-its more controllable on Blood levels.
Masteron-good choice it will get expensive at high dose per wk.
heres one I did leaned me out, hardened me up and added good quality mass.
Winny oral 60mgs day for 2 weeks
Deca 400mgs week
Masteron 500mgs week
Test Prop 100 mgs EOD
Winny oral 60mgs day last 4 weeks of cycle
PCT as normal 15 days after last deca shot.
Just my Opinion