Digital BW, The Print

I've been printing with the Warm Neutral inks for about 6 month and while I'm blown away with the results I find the tone of the inks just a little too warm.

I've seen examples of the neutral ink set and find that just a little bit too neutral. 

It seems I've two options:

 1 - install a 50/50 mix of the neutral set and the warm neutral set into each cartridge
 2 - do some sort of 'split toning' 

With the split toning I could do a 'traditional' split tone with, for example, the darker tones as neutral and the lighter tones as warm-neutral. 

Or could I get a more even tone by alternating warm-neutral and neutral through the tonal range? (i.e. #1 - neutral, #2 - warm neutral, #3 - neutral, #4 - warm neutral etc)? Would this have a different effect from just installing mixed inks into each cartridge?

Anyway I'd be interested in reading anybody's thoughts and experiences on the subject.

thanks

Julian