500mg of test will be plenty for this cycle, as well as your next few cycles. I usually suggest 300 to 500mg EW but I have seen guys do well on even less. Along with the dbol, you will gain more than you know what to do with, especially if you have your diet dialed in. I would continue using a cycle at about this dose scheme for the next few cycles. Eventually, you may find that after 2 or 3 cycles like this, the gains start to become not as dramatic. From there, I would keep the test the same but add an additional inject, like 400 to 500mg EQ. This will ramp the gains back up. I honestly don't see you needing to add in more test to make gains, for some time. 

Only thing I am not fond of here, is the dose of adex. .5mg ED might be a little high. I would start with ,5mg EOD and then if needed, go up. If you find you do need to use more in the early stages, remember that estrogen won't be as much of a potential issue, once you are done with the dbol. 

AND YES,  you need to do PCT for ANY cycle! PCT starts 2 wks after last shot of test. Continue on the HCG until a few days before PCT, then start Nolvadex at 40mg ED for 7 days, and then 2 more wks of nolva at 20mg