I found this example of crosshatching through blocks with a different treatment of sashing. Might give you some ideas:
http://abusybobbin.blogspot.com/2014...ss-blocks.html
I had a hard time finding an example of crosshatching through sashing (although this was often done on vintage quilts), but maybe this example of all-over crosshatching will help you visualize it for your quilt:
http://www.aquiltinglife.com/2016/09...-tutorial.html
And one otherexample I found:
http://quietplay.blogspot.com/2014/0...out-tears.html
Be sure to check out tutorials on crosshatch machine quilting before you start. I strongly advise using a lot of starch. If you will be sewing at a sit-down machine, I would starch the backing with a 1:1 solution of Sta-Flo liquid laundry starch and water (heavy starch application) and would spray starch the top several times before sandwiching. To speed spray starch drying you can place a fan near it. Several layers of spray starch are good. Basically what the starch does is stabilize both the backing fabric and the top so they are much less likely to stretch as you sew. Stretching of the fabric creates puckers when you cross a line of stitching. Starch is definitely your friend when cross-hatching!