Was just gonna say that, Rick. AG Guys Liquidex is actual Arimidex so it's more potent i.e. Maybe overkill for a sarms triple stack.
I'd go for the Liquidex AI from N2BM as that one contains Androsta, a very good milder AI that'd be great for the sarms stack, plus osthole which gives you a really good pump/sexual boost.
Up to you how hard you wanna hit the estro