I think Riddle1
does a good job of making the modern costume movie quality. (Facebook.com/riddlesmessywardrobe)
But I think the movie would probably add tweaks here and there on the modern using the Ultimate version.
Like when they add tiny details for very close ups. Adding straps or buckles or seems or whatever.
I'd also imagine that the look will fallow the Ant Man look so they look like they are from the same
movie and that they both would fit into the Avengers movie universe too.