makemygraphix,
There are many people printing with Epson 2200 based 7 color garment printers like the T-Jet2, printing direct from PhotoShop and using the standard Epson drivers. These people are not printing with white ink, they are using (CMYK,LM,LC,Lk). I believe that one of these people is using the Matte Heavy Weight paper profile with success.
I think that you might have success using the
DTG inks
Best of Luck,
GRH