New myself and planning on doing my first cycle.
Yes run your otc pct with your serm don't run it one after the other.
Not really sure about the AI, but from my understanding Otc AI's don't really do anything and you will need a proper AI.
That said LGD should not armoatise to estrogen so technically you should not need an AI, however as others will say its always a good idea to have one on hand just to be safe. I will have one handy for my cycle just in case!
Anyway like I said I am new myself so if any of the more experienced members can see anything wrong with what I wrote please feel free to correct me