Personally, I'm against 5/5 Divinity unless you're going 17+ into prot. Really, I'm against Divinity altogether, but Divine Strength is useless. :-\
If you want to keep the bonus crit from ret, I'd say this:
http://www.wowhead.com/talent#sxA0gM0sVu0tgdZVfbx0h:bwdcMV
HOWEVER, that 8% crit isn't worth as much as Divine Guardian. And the Flash of Light glyph isn't great either. My overall favorite holy build is:
http://www.wowhead.com/talent#sxA0gM0sVu0tgdxGzubh:fwdcMV
But then, because I'm always raiding with multiple prot paladins, my Improved Devotion Aura doesn't do anything extra. So I changed to this:
http://www.wowhead.com/talent#sxAzgr0sVu0tgdxGzub:fwdcMV
Aura Mastery is very powerful, and Imp Concentration aura helps out casters on fights with spell pushback effects. It is annoying, though, on fights with both elemental damage my resistance auras work on and spell pushback. Changing auras wastes time.