If you're running test for 4 weeks, then _primo for 4 weeks after that, you're t-levels will be very, very low at the end of the cycle. I would say to run it for 2-3 weeks or go for a full-on cycle.
It would be better to reorganize that into:
2 weeks _primo
2 weeks _primo + _test
2 weeks _test
But no matter what, you're t levels will be low at the end.
You'll probably want to end with _t-_prop and do a full _PCT w/_HCG, anti-e, et c.
I would do either 2 short cycles with 4-6 weeks off in between or get more gear and do a full cycle with full _PCT .