How many have you cut with the Go? If you only have the three that you've already sewn, I would redo them. But if you've cut a bunch, well, then we have to look at how many blocks you need for your layout and how to tweak the layout.
In actuality, the difference in the blocks is only 1/4 inch on all sides. Could you put a frame around each of the blocks before adding sashing? It could even be the same fabric as the sashing. You could then bring them all up to the same size. I did that with my sampler quilt where the blocks finished at 8 and 9 inches. No one can really tell and that was a whole inch difference in size.
Here's a link to my quilt. Some blocks have a 1 1/2 inch border and some have a 2 inch border before the 3 strip sashing.
https://www.quiltingboard.com/attach...35-medium-.jpg