yes OP,  mastery will be your lowest attribute, crit and vers will be your highest.
30% crit mandatory(unpot/unbuff). utilize 2 infusion and spams flash heal, (holy light can be use well to sometimes regen 2-3 holypower in one go, rarely use it in mythic eranog).
Light of Dawn - Veneration (Caster build)  / no crusaderstrike* (but optional)
BEEAAAAAAAAAAAAAAAAAAAAAAAAAAAAQEAAAAAAAlIgUikoUQKJJJSgSiENRkkSSSSSUShE0QE
No light of dawn -  Veneration (Caster build)  / no crusaderstrike* (but optional / i dont use it lol)  - power of the silver hand can be exchange for anything u like, i just love critting with shock up to 200k but if u want extra +20% crit wings proc then exchange it.
BEEAAAAAAAAAAAAAAAAAAAAAAAAAAAAQEAAAAAAAlkASLtkoUQKJJIhokIRTEJpkkkkElUIBNEB
^^^^^^ this is pre-10.0.7 ^^^^^^
the 10.0.7 build uses fading light b/c holy light bubbles and flash of light bubles you when it regen holy power, holy shock and hammer of wrath too + crusader lol, but sht  really forces you to go full melee, and with low haste, u rather take “seal of order,” but again it is very tempting to get fading light.
I do have melee healing build that utilize maximum potential of current holy paladin, that uses crusader strike but that is just too boring, u are basically a caster in melee that only dps when there’s window. you must constantly heal and not watch anyone drop below 95% hp, everyone must be full or overheal.
this is the logs that my guild master took on council, [Warcraft Logs - Combat Analysis for Warcraft](www dot warcraftlogs dot com/reports/ATGDB37aYk1qtyFz/#fight=6)  it represent 2 paladins, 1 is melee and me as caster, both well works  just fine but the other pal obviously does more damage, the purpose is to keep your team alive.
this one is with light of dawn caster build [Warcraft Logs - Combat Analysis for Warcraft](www dot warcraftlogs dot com/reports/t7mgrqdJaYGv3jWB/#fight=24)