Unfortunately, Zaer only said that he'd allow the Arcane Swordsage to fulfill the casting requirements for Windwright Captain, not the regular Swordsage. ^^; You could easily still keep your sheet mostly the same while switching over to Arcane Swordsage if you wanted, though.  You'd have slightly lower HP from downgrading to a d6 hit die, but if you swapped out a single 3rd-level maneuver for Greater Mage Armor, your AC would stay the same even without any armor proficiencies.  Then you'd have money for an extra item, but otherwise wouldn't need to make any other changes if you didn't want to.