You're further progressed into BRF than I am, so take what I say with a grain of salt. On Kromog, I hardly felt like I was "delaying" AA to take advantage of Clear Thoughts (of course we're not talking about hiding behind pillars. 4pc or not, you're delaying AA during that). I felt like AA lined up quite nicely with the Stone Breaths or other AoE. It also felt okay to cast two PoHs during several Clear Thoughts. Most of my overhealing with PoH felt like it was out of a pillar phase and merely used for blanket DAing a group before the following stone breath. PI is always up for that anyways, so everything -seems- to line up quite well.
https://www.warcraftlogs.com/reports...ling&source=25
If you go to the Casts tab and select AA and PoH, you'll see the only "delaying" of AA was during the scripted downtime. The first cast of AA isn't on the logs as I use it a few seconds prior to the pull so the following AA cd comes up two seconds before the 2nd Stone Breath. Other than that, each AA cast was spot on and the preceding PoH casts during Clear Thoughts seemed efficient enough.