Depending on your DM and campaign setting, you can either substitute other gods for Wee Jas, or go without a patron deity.
I took
Kossuth, Destruction(1 Smite/day, can get more with the Extra Smite Feat) & Renewal(Emergency Heal) for my faerunian RKV.
If you go with a concept instead of a deity, just match any two of Darkness, Destiny, Healing, Law, Metal, Nobility, Patience, Protection, Retribution, Shadow, Strength, Temerance, Trickery, Tyranny, War, Wrath & Zeal. There might be more, that fit with your DM's view of a "[Whatever] Knight Vindicator", but the above are what I've given a player to choose from.
@ More Turn attempts:
There's an Item, Reliquiary Holy Symbol, that will grant additional turning attempts(IIRC 1-3, depending on various prerequisites).
In Power of Faerun there also is a Feat(Heretic of the Faith) that lets you choose 1 of your domains regardless of what your deity offers.
Combine that with the Spell Substitute Domain(Complete Champion), and you should be able to get any domain you might need(provided time to prepare the spell and cast ist) for a few days at least(you can always renew the spell, before it expires).
Of course, if you're in Faerun and your DM agrees with me: Kossuth does offer the Fire domain...