I've never heard that "dark,oily skinned" theory before, but MGNA is correct.
Don't automatically assume your gonna get gyno. Also don't be concerned about keeping your estrogen level down, your body tends to find its own level to cope with the additional hormone your adding, a small amount of est. is beneficial to a mass cycle. If your nipples are not getting puffy, or your not feeling and looking watery, (you can feel bloat, hands get tight, ankles get puffy. You look smooth and face is round and puffy) Then keep your AI around just in case, but don't automatically add it in.
As for 8 grams of EFA's ? It ain't gonna hurt ya, but after 4 your kind of spinning your wheels. Do you know that your HDL is naturally low ? That would be the only reason for all that additional oil. Too much will make your skin oily and may make you prone to pimples.
IMHO, JUST RUN THE TEST !! It's your first cycle, see how your body reacts, you can add additional compounds like Deca, Tren, EQ, next time and you'll know what the test did, so you can accurately determine what the newly added compound adds to that...
Save your nolva, clomid and whatever for PCT...