Digital BW, The Print

I just bought a C86 to dedicate to BW printing. I am going to put MIS 
EZN inks in the printer, but would also like to be able to warm or cool 
some of the prints a bit. My understanding is that swaping a warm or 
cool cart into the Yellow position will do this, so I plan to purchase 
these too. I like warm prints better than cool, and my question is: 
Given that I do like a warmer print, should I buy any other warm carts 
too to give myself a little more choice in the matter? And, if so, 
which one would people recommend? Thanks in advance,  Maria Holmes