Hello dtmabry,
Nice quick re-post...that said...
I know quite a few photogs that are using the Roland for making custom shirts for their photo shoots. Maybe not the same process, but I think you should be able to capture your photo market w/ the equipment you have in place.
I'm certainly not knocking the screen print option, but for your target market...they are looking for something to celebrate the occasion. Basically, if the parties have their night out, they may be interested in a custom t-shirt for the night, w/ no expectation of ever wearing the shirt again.
So, if that is the case, you would be able to offer t-shirts in a profitable situation, meaning you would not need to order 100+ screen print transfer...you would be able to create the t-shirts w/ vinyl/films/heat transfers at a affordable cost to you...and be able to supply the customer w/ the product they want.
That said, I do think you should experiment w/ the GX-24, it has many great features that can make these short runs profitable for your photo biz.
Thanks,
Mike