I am doing a fairly short run of 100% polyester shirts (Augusta 790)

I usually only work with 100% cotton tees, or on slight occasion, blended fabrics with only a small amount of polyester mixed in.

I only have standard plastisol inks. Will this be okay to print with on a 100% polyester material? I will be printing a white on colored polyester shirts. I am aware of dye-migration, but I need to make sure that everything is going to come out smooth here haha

Let me know what you guys think!

Nope, I would use a specific polyester white for that otherwise you may experience dye migration.

There's only one way to find out for sure. Print a shirt and cure it. Then let it sit around for up to 3 days. If the white ink stays white then you should be good to go. But I wouldn't even touch that print job without a poly white.

http://catspitscreenprintsupply.com/eco ... nk-gallon/