I never even bothered with Wanderer's Palace. 50, with AF gear, started farming CM and AK and Ifrit, just queuing for whatever will pop. AK's Demon Wall boss is a bit of a DPS check, but not a huge one. Just don't go in there with anything lower than AF and level 49 accessories.

I personally recommend replacing your belt and accessories with Darklight first, throw in any AK gear you find, and the Ifrit weapon and Garuada will be no problem. Titan I am less clear on the threshold.