Nice tank, I wish I could have gone 8' but space limitations left me at 6'.
Nudies often are very diet specific and will often die of starvation after not long in a tank... if they survive the intakes/powerheads. There is one kind of Nudie that eats aptaisia and nothing else... so you have an aptaisia problem you get one then it munches them all... no food left so it dies... I have heard of someone growing aptaisia in their refuge and moving a rock up to the DT every week or so... just to keep their nudie alive and keeping the DT clear.
Make sure that when you rescape you take some before and after pics
What other fish you plan on getting? Or do you plan on just... not planning
and getting fish when you see one that "fits".