Honestly if you're having trouble clearing T5 in DF with your current gear and the 20% echo buff or whatever it is. You'd need to start making PF groups to help with a clear. Hopefully you know at least a few people on your server that might be able to help or your FC. Funny though that DF groups in second coil seem to be fine (apart from T9) I usually win about 75% of the time in those.