heh im 45 lvl rouge/cleric [skills on 40 lvl both]
IDK why you need robe, coz if you use DD/CE your defense is a quite low, drastically increase damage that you take.
And i have only that skills:
- Healing Circle - asssaving skill
- Recorvery Division - now i have 2,1k mana with stuff, and ill need use autopot after cast but with 42 lvl cleric rod it heals 400-750 hp (something like that) per 5 seconds. 5 mins of autopoting ^^
- Reverse - up to 60 lvl i can ress
- Bless Spell - omg this is sooo good skill. If you have cleric with better bless level alow him to cast bless, after that cast your (first stronger, after that weaker), 2 bless stay on all party members per 45 sec but... defs increase very good
- Faith and Charity - for get good skills is required big wasting of sps on that one (not exactly, Charity give WORKING passive on buffs)
- Body Bless Spell - cans onself when you running from horde of mobs , or on friend from party if there isnt any cleric / is cleric with robe. Why? Coz Charity work only when you have light armor, so you can give much more defense than that cleric
Now ill put points on this buff that increase magical defense and in Heaven Glare/Flash - this is hell a ysefull on pvp, im sure you cant heal from that status and someone cant come near you.
Healing is for full intel cleric, you will be quickly out of mana when you heal. And much more farming too

Now i m on -4 from 40 lvl I increased it. At 44 i'ved enought sps for increase all necessary xbow skills (this one on 44 lvl) and for increase bless spell/body bless/holy word/prereq from 44 lvl too.
BTW: I can suggest you to dont increase mastery level when you dont have any very usefull skill on it. And always calculate how much sp you still need.
EX: I haved mastery on 35 lvl coz on that one i get upgrades for all atacks and some buffs, After that i increased my gap till 40 lvl - on that level i getting this shot with KD, from cleric - recorvery division - and from now i can kill 3-4 lvl more gigants alone. From 42 to now I grind on ujigis/mujigis (2 hits)