I took the liberty of checking your gear on lodestone. My immediate advice would be to update all your accessories and belt from the market board to lv50 as soon as you read this. It doesn't matter which ones as long as you focus on healing items. It will only cost you a few thousand gil but you can easily recover them after you convert those items to materia upon gear replacement at a later stage. Your weapon as well, just to last a couple of rounds in WP for your WP gear and initial darklight farming.

Other than that, follow darksword's advice from above.