A fantastic resource for SH hpallying -- https://sacredshielding.wordpress.com/
Radiance and LoD are barely worth a cast, they're weak. Casting LoD is fine if you just want to burn the holy power, but your average LoD hit was less than your average beacon transfer.
A 3 minute Zakuun kill with 4 healers is probably not the best log to go on, since you really don't need 4 healers. The shaman in your logs barely did anything compared to the other 3. Maybe get him to dps?
I also noticed that you're not really casting Holy Light as a filler, but instead spamming FoL. (That's f