Be careful with the Ko`olau - John doesn't use the traditional Lili`u tuning on his sets. But, they are what I would use on a six with a doubled C and A - very nice set.
Worth's would probably work well for Lili`u tuning. If I had a set of Aquila, I'd give them to you.
If it were me, I'd build my own set out of D'Addario J45/46 or J49/50 (probably the 49/50) Pro Artes - but my 6's are more of a 3/4 8-string (tuned more like an 8 with octave G and double high A).
-Aaron