If your static group isn't very good I would focus on upgrading your armor as you probably won't have to worry about DPS riding your ass in threat and won't be hitting Turn 4 for a few weeks.

My group was a random pick up between people in our FC, most of us had Relic+1 and full DL with a few people behind that gear curve and managed to clear Turn 4 after only 3 raid days which was about 9 hours of raiding so spending my myth on the chest would have put me 3 weeks out to get my +1 and on Turn 4 and 5 our DPS are insane, even as a WAR, they are right behind me.