I think twice a week is fine with enanthate... I tend to do it 3x just because I have other shit to inject as well.. if i'd cut down to just test e and deca, i'd do it twice a week.. Monday and Thursday.
been doing 200mg every other day for a total of 800 mg a week and let me tell you its going preety good no side effects. about to run out of my first bottle of 10 ml getting another one this week