QTR-Quadtone RIP

I have an unused R260 and an R1800 printer. I have been using QTR and 
the R1800 for BO printing with one black ink and no toning and have 
gotten pretty good results. However, In the hope of even better 
results, I was planning to set the R260 up with a set of UT-RCW ink 
cartridges from InSupply for QTR BO. I ordered the ink cartridges, but 
they have been back ordered for almost a month now. Having had so much 
time to think about it, I am wondering if I should use the R1800 MK-3 
process with QTR instead. I understand it will make the R1800 into a 
matte printer, but I think I can live with that. Or maybe I should 
stick with QTR and one black ink (I actually don't notice any banding 
or other significant imperfections, just quite a lot of warmth). So, 
which is the better set up, the R260 with QTR and UT-RCW black only 
inks, the R1800 with QTR and 3-MK or the R1800 as it is with QTR and 
one black ink?

Thanks for your opinions and I apologize for the rookie issues.