I disagree. You are severely hampering your offensive and defensive stats by fulltiming wHP gear. I macro in my wHP gear with my Healing Breath macro with no issues. It's very rare that I hit an off value on a breath, only happening occasionally in high-lag situations and even then it's usually because I hit the macro more than once, throwing off the timing to get my Wyrm Armet +1 equipped. Make sure all of your /equip lines come before the /ma line and you should be fine.
I also suggest not full-timing HP+ accessories such as Bomb Queen Ring either. Those items can be swapped in at the same time as wHP gear. I do agree that you should try to keep your max HP as high or higher during your Healing Breath trigger as during your TP set. Using effective swaps can even artificially raise your trigger amount by swapping out non-essential offensive gear for +HP gear. I have yet to change my macros to add additional +HP gear, but here are my sets for
Solo TP and
Healing Breath (Drn. Armet +1 on trigger). Ammo, Ear2, Hands (I prefer to keep Homam instead of swapping in Ostreger Mitts), Ring1, Ring2, Back, and Waist are all fair game for swapping in +HP, ideally filled by White Tathlum, Bloodbead Earring, Alkyoneus's Bracelets, Bomb Queen Ring, Bloodbead Ring, Gigant Mantle, and your lvl70 RSE Sash.