QTR-Quadtone RIP

I've installed a UT3D inkset in a 1290s.

The inks I have used are:

Eboni
Cool toner
Light Cool toner
Carbon
Lt Carbon
Yellow Lab a axis toner

Now I have started playing around with the curve creation with QTR, 
any ideas how best to approach it would be appreciated.

My method thus far:

I've started by producing a carbon curve by using Eboni, Carbon and 
Lt Carbon and simply partioning them.

Secondly, I produced a neutralish curve, using the Carbon curve plus 
Cool toner and Lt Cool toner, by referring to the Lab a and b values 
following various iterations.

Thirdly, I produced a Cool curve using Eboni, Cool toner, Lt Cool 
toner plus a dash of Carbon and Lt Carbon (as I have seen in various 
UT7 curves.)

Finally, I had a go at producing a maxed out Selenium/Lab a curve, 
using a maximum amount of Lab a axis toner applied to my Neutralish 
curve, but it is not my intention to use this curve for printing out 
directly from, but rather to blend it with my neutralish curve in 
various amounts in order to get the desired effect.

If my approach is flawed or could be improved upon, I'm open to any 
suggestions, before I go any further with my tests.

By the way, I absolutely love what my neutral curve and Lab a axis 
toner produce when blended in QTR,

Jamie.