Both formestane and 6-bromo is good for recomping.
But no need to use them both bro.
Aromatase Inhibitor will increase your test level because less test is converted to estrogen thus lower estrogen level too. SHBG is also reduced so that more free test circulating in your body.
It will harden up your muscle and create good environment for fat burning, which is perfect for recomp purpose.
Pick one and run just one of them. Because too much AI is not a good thing, it will drive your estrogen too low (unhealthy level) which makes your joint sore, screws your lipids, destroy libido / sex drive, etc...
Remember that our body still needs estrogen to function properly.
Hope it helps....