Ilvl restrictions for leveling dungeons?

[Sieben79]

To be honest in SB I think you can't just level through dungeons using the gear you get along the way.
For example HQ level 68 gear is surprisingly stronger than the gear you get from Doma Castle (like pretty much the same level as Genta to Genji equipment) so you'll probably need to shell out some gil if you want your runs to go as smoothly as possible.

Of course it's stronger than the ilevel 67 doma gear, because it's ilevel 68 But you don't need it for Castrum Abania.
If you hit level 67 and unlock Doma Castle and level through til level 69, there is a high chance to enter CA with all gear of Doma Castle (if lucky even with the weapon). Doma Castle gear is sufficient for Castrum Albania and after 2-3 runs with exp bonus you'll hit 70 and get your left sided 290 job gear. There is no need to spend money for crafted gear (if you got the HQ gear through quests, then you can upgrade missing parts like the weapon).