In order to really help you we need to know the following important things, especially since you are considering tren and appear to be unfamiliar with it.
Age:
Height:
Weight:
Body fat %:
Years of training:
Complete cycle history:
PCT for each cycle:
Goals w/ this cycle:
General idea of nutrition:
Pre-existing gyno issues:
Anger issues: Y/N
Now let me explain that Tren has both physical aspects as well as mental when it comes to sides. Special consideration of ancillaries must taken into account as Tren, as you noted can cause possible prolactin issues in addition to standard estrogen control issues. You'll have to combat gyno on two fronts. Both T3 and Clenbuterol would be removed from any cycle I would run personally as 1. T3 is fairly new to the market and potentially dangerous as it is a thyroid hormone. When users take T3 they're essentially making themselves hyperthyroid during their cycle. This means you may suffer the same symptoms as someone who has the medical condition of an overactive thyroid gland (Graves' disease). What does this mean to you? Symptoms of Graves disease are muscle dysfunction, decreased strength and feelings of lethargy. Scientific studies on humans have shown that high thyroid levels are symptomatic with/to lower glycogen content, decreased activity of certain oxidative enzymes, changes in the composition of muscle fibers, phosphocreatine depletion (reduces muscle strength during contractions/exercise) and muscle atrophy - a decrease in muscle mass, all of which is associated with the hyperthyroid state. What this means to you... if you have a normal thyroid gland, taking exogenous thyroid hormones can decrease your performance in the gym and cause muscle weakness or result in muscle loss.
2. Clenbuterol: Since Clen stimulates the nervous system it can produce emotional side effects such as anxiety, paranoia and extreme nervousness. Tremors often occur which can make activities such as holding things difficult and with higher doses insomnia (double dose of this with Tren run alongside it) usually happens. If you suffer from anxiety, or depression stay the hell away from Clen.
Considering you want to take Tren, T3 and Clen it seems your main goal is to cut, or lose unwanted body fat. If your diet is in check Tren (a repartitioner) will do that by itself and the other two highly dangerous compounds can be dropped completely unless you just want this to possibly be the worst cycle ever. As for Tren Ace, or Enanthate look at it like this... the longer the ester obviously the longer it takes to clear out your bloodstream. If you find the sides of Tren unbearable (many do) you will suffer longer with the longer estered variant.
Nolvadex on PCT is a must. As far as OTC drugs/supplements to help during a Tren cycle... Lol, seriously? The most powerful androgenic compound and someone possibly suggested an OTC? Other than obviously a cycle support supplement like Cel Assist which should be run on any cycle IMO, no there is no special Tren OTC made other than maybe a sleep aid if you can stand one. If I were you I'd revamp this entire cycle and educate myself on Tren as it is a very loving, but unforgiving carnivorous beast that can make mice out of men just as easily as it can do the opposite.
***Yeah, obviously I'm adamant about Tren. Possibly one of my most detailed posts ever in the history of The 44. Slow clap commences now...