Ifrit isn't very difficult. I went in with a LV44 aetherial weapon from D. Darkhold with AF and crafted lv49 accessories. By the time you go after Garuda you should have some stuff out of AK and the Ifrit weapon or something close to it like Wanderer's Palace weapon from last boss or level 50 GC weapon. Titan you want to want to be geared up in at least all greens from AK with maybe some Darklight in there. A Garuda weapon would really help.