tbh all these except for the block cert change sound great, but if you're a healer without using the real defensive abyss set like guardian knight or breath of life you most likely going to be below 40% block r8
For doing PvE exclusively: http://limeox.info/app/scarlet/#build=40X__00_000000011100030300fa14000c05f0020
4 damage skills is all you need. Maxing atomic launcher is optional, kinda nice but has a long cooldown. Crit buff is obvious. Eva buff is broken at this cap. Chakra accessories, crit rate randoms, crit atk jewels.