Need to run the test longer than the deca due to the decanoate ester being longer than enanthate. You do not want to end on nandralone.
Test 1-14
Deca 1-12
HCG 7-16
PCT 17-20 (Didn't see anything for cortisol in your plan)
Running deca any less than 12 weeks is silly IMO, again due to the long ester it will take a while to build to effective levels. Say it is fully "kicked in" by week six and you end at week ten, that is only four weeks at optimum dosage.