QTR-Quadtone RIP

Hi All,
I am a brand new QTR user and have a few questions, please forgive me if they have been previously covered, I did do a search.

First of all, I'm printing B&W on an Epson 3800 using the Ultrachrome inks (I need the flexibility to also print color), using Photoshop CS4, on a Mac.

I spent most of yesterday making test prints of the same image on Hahnemule Fine Art Baryta (HFAB). I used the Silver Rag curves and also compared to using the Epson Advanced B&W driver (ABW. Overall I was quite pleased with the results, the tones seemed to have more separation (if that's the right term) and overall the prints seemed crisper. However I am still searching for that sweet spot.

One thing I noticed was using the neutral curve and comparing to ABW, the print made using QTR had an very slight red cast, compared to the very neutral ABW print. I would like the QTR neutral baseline to more closely match the ABW neutral.

So my question is, in order to achieve these results, do I need to develop my own custom ICC profile for the paper and / or my own custom curves for HFAB paper?

This may be complicated by the fact that don't own a spectrophotometer that will read reflective, I only have one for profiling monitors. 

Thanks in advance for any suggestions.
Cheers,
Robbie