I would start the exem at 12.5mg eod when you start the halo, and then be the last thing you come off of. Run exem two weeks past your serm and stop, no need to taper exem actually, did some more research as the whole exem over adex thing is relatively new to me too Not only is exem less likely to cause rebound, it actually cant cause rebound.

So summary: halo has some (very small) potential to cause gyno, serms have a slightly higher risk, the highest risk time will be the weeks after ceasing serm use, and finally exem has zero rebound effects.

Everyone isn't the same. mostly likely not, but you may need to adjust exem doses based on how you react to the various substances, listen to your body. Look up hi/lo estrogen sides to get an idea if needed

Different topic, do not use a cycle support with saw palmetto or any other dht blockers as it makes epi andro hard less effective, just ask Wes lol. I would be tempted to run the halo the whole 8, and bump the dose to 100+ as sides allow. Halo is pretty tolerable, so is epiandrohard, well to me anyways haha.