Once again, all who contributed to this thread were right on the money IMO.
Those are a lot of questions. lol Are you suffering from gyno right now, or are these questions just for personal knowledge?
In any event; first, you need to control the E2 conversion by finding the proper balance with your AI while on cycle. The BW you SHOULD acquire will guide you. Yes, you can use nolva at the same time as your AI to help remedy the gyno. Be aware that serms can slightly impact the effectiveness of your AI. However, lower E2 won't make the SERM more effective it will simply reduce the number of aromatase enzymes capable of synthesizing estradiol which reduces the likelihood of it binding at the receptor. For some, there's no need for an AI to treat gyno. The SERMs should take care of that unless your E2 is elevated in which case dosing of AAS may be adjusted if possible or adding in an AI (which you should have already). Running both together isn't a problem if it's needed, but always try and use the least amount of compounds necessary is my $.02 Less = More.
I hope this helps!