Hey lol, your fire team isn't bad at all for this raid, you have Svarog, Brynhildr, Ares, Agni and Acala, Ragaraja is pretty good if you need an extra heal or just getting to burst faster, appart from your grid there shouldn't be any issue with you getting to half the Disaster HP on your own if you go with a nice strategy and a Soul that adapts to this raid.