If you already have gyno, doing a cycle using aromatising steroids without an AI would present a very large chance of making your gyno worse. I would definitly try to get your hands on an AI. (You can find the names of them in the SERM and AI sticky to see if you can get another type. Although, arimadex is definitely recommended for your firt cycle, as it's easier to dose correctly than say, letrozole, another AI.) It shouldn't be TOO hard to find arimidex if you're in the U.S.
I don't know if taking nolvadex on cycle would be a good idea in your specific case, but I do know that most people don't recommend running a SERM on cycle. (Unless it's to rid gyno symptoms.)
As for your ester choice, I would use the test cyp first, with a big frontloaded dose (A "frontload" is a large dose, ie 600-750mg for a 500mg/wk cycle, on your first shot in order to help raise blood levels faster) and then finish with test E as it will clear your system a little bit faster than the cyp, so you'll be suppressed for a shorter period of total time.
But again, try to get your hands on an AI.