What's up with Arimidex "on hand"??? Arimidex prevents the aromatization process, not helps once it has occurred. Sure you can start taking arimidex if you start feeling gyno symptoms and prevent further aromatization, but that means there's already a high level of estrogen in your body. So what you need "on hand" is something to stop that excess estrogen from binding to the location you don't want it to... which is a SERM, tamoxifen in particular.
I experience no "lower gains" while taking arimidex, just less water weight. "water weight" is not gains anyway, so who cares.
The cycle looks good actually. I believe you probably have room to grow before hopping on juice seeing as your young and you've been lifting for only one year.