Hey bro,
Thanks for the question, brother. The reason I suggest guys wait on tren on their first cycle, is partially because it is a "big gun" and that you can make great progress with less, but also because of the sides. You'd be better off using gear that is easier on side effects for awhile first. Then when you are more experienced and not getting as much out of the milder compounds, explore tren. I think that EQ would be a great option, along with a moderate dose of test. Really, on 500mg of test alone, you would probably be surprised by your gains. At HRT dosing, Test will make you feel normal, but increasing the dose to 500mg is going to be different. At that point, it will have a drug like effect, very different from the natural health effects you feel now. If you wanted to add something else in, EQ would help to add a good amount of muscle, while on the right diet and training plan. I also believe you will need more adex than you are currently using since you will have higher conversion to estrogen than you are on your current doses.
I would lay it out something like this. If you find that your gains are slowing sooner than 16 wks, you could always cut the plan short, go back to HRT and begin recovering, but if you are doing well, EQ will continue to work longer term, so 16 wk may be a nice time line. Feel it out.
1-16
Test E 500mg EW
EQ 400mg EW
adex .5mg 3x wk to EOD, or as needed to control esotrgen
HCG- same as you have been
Also, just a side note, I would consider a better carb than maltodex. Waxy Maze will better shuttle nutrients to the muscle. I'd look into that or the other options out there