1) Your amount of Test is FINE!!!!!!!!!!!

2) You MAY not need an AI at all with that Test dose BUT you would have to run the Caber or prami and keep the AI on hand. (important that you know what E2 sides to look for)

3) Yes you can be calorie deficient and gain LBM on Tren (just not too deficient) 500 cals or even at TDEE will do the trick

Again...with the low dose of test you suggested you would need either the AI OR the Prlt control (Caber or Prami) and keep the other on hand FOR SURE! If you do run the AI I would go .25 2X per week since your test dose is so low!