VD Levi is totally doable on a non-REMA BLU/WAR, provided you do the above, and have a -DT set to turtle in for Grand Fall. 3-4 min clears, all the stones will be yours, and it drops all varieties w/ equal consistency.
Agree. My DT set is far from ideal so I use a BDT Dark Ring and Blackshell Hairpin. Grand Fall is breath damage so it really helps, you don't need any PDT and you should easily cap MDT for Waterja with Shell. So you can use just one turtle set without mode switching and risking screwups.
If I lose it's nearly always because I messed up the positioning (except sometimes Yoran loves to reposition during Waterja when I run back).