IMO your cycle would be good to run it like this,or i owuld being your second cycle
Test-500-600mg-16 weeks
Deca-400mg-14 weeks
i wouldnt run the deca less than 14 weeks,cause its very slow acting,in my case,gains are not noticed until week 10,i run my deca 18 weeks,but thats just me,everyone reacts to it differently