I wouldn’t use your aldur’s over your BP. Maybe consider going back to NM Meph to grind for a raven to free up your shield slot. Your LL from your cathan’s and blood ring craft should be decent enough, but Luiser is right in that more is generally better. I like the suggestion for treachery as that’ll help your BP hit better breakpoint, and the fade proc should help your res issues.

It hasn't been mentioned The Mausoleum is aLVL 85 and offers a very tame mob set to kill. I would suggest trying that out as well. Usually where I farm when The Pit is too sketchy.