Because the design is a rectangle and has straight edges around it, it could be done with an opaque inkjet transfer. As long as the thicker hand does not matter for your group, than that is the best way to go. Otherwise, look at using a
dtg contracter. Because of the amount of ink, you are probably going to want to go with a
dtg owner that runs the Kornit to make it cost effective. Use the pricing on contractdtg.com as a benchmark. The cheapest way would be opaque transfer paper.
Hope this helps.
Mark