I have some places locally (Portland Oregon) that we outsource to, one with a brother for light garments and one with a kornit for dark garments, but since I'm not a huge fan of direct to garment I would suggest using Apex
https://www.apextransfers.com/ultra-ink.php to order some transfers, you can gang up the images, and then press them on.
I've been doing this in favor of direct to garment recently, and even for some larger orders where it was cheaper for the customer to do this than traditional screen printing due to setups / separations / ink mixing, ect.
They look great, and feel more like a screen print that is heat pressed, don't smell like vinegar (pre-treat), and hold up better to washing than a digital printed vinyl transfer.
It's good to have sources for DTG, but this may be a different approach to the same order and I think you'll get better results than DTG this way depending on the image / garments being ordered.
