This one will most likely take a screen printer or very good printer on here to help you out with.
The multiple colors makes it tough to screenprint, plus they are oversized screens so that could end up costing you a lot.
DTG might not be able to do the entire thing, but I am not an expert, they may be able to break it up into two prints.
Oversized designs with multiple colors is definitely doable so you can do it, but your minimum may be high so you will mos tlikely need to have a lot of them presold to justifiy the printing.
Hopefully someone will chime in on here. I would like to know what people think the costs would be and the best way to get these done, as I have some designs similar.