All Epson heads can print pigment inks. But heads can always clog, regardless of ink used. You want to print something that uses all 4 colors at least once a week. I have a simple file I made that is nothing but a few squares of Cyan, Magenta, Yellow, and Black.
More importantly, what color shirts do you want to use, and how long do you want these things to last? And does handfeel matter?
JPSS for lights works well on white shirts, and okay on light colors--IF you trim around the design so you don't have a "box" around the art (the transparent transfer layer darkens the shirt a bit, which is noticeable on any color other than white).
For dark shirts, there isn't a paper that is both durable and nice feeling. Transfers for dark garments have to include their own white underbase layer, which tends to result in stiff/heavy feeling prints that are not all that durable.