Wouldn't that leave you with only like 314 str? Curtana's got to cap higher than that. You've got other triples on there, might as well go for triple Str gauntlets over Darklight. Hell, if you wanted to keep your belt you could use the Maelstrom Shield/Earring/Bracelet. You'd probably have to switch out those Rubelite for Electrum on some fights (like Curtana/2xHQ Electrum/Militia gets me only ~95% accuracy on Nael/Ifrit, would be lower on Garuda) so having more str options would be good if that's your focus.