No, I won't have sashing on this quilt. 10 x 20 (aprox) 8" blocks, 4 inch border and 8 inch border. Might be 3 and 9 inches. Better balance. Total 12" borders, at any rate. Queen finished size, with decent overhang.
Oops, missed Hummer's question. It is all one quilt. The color shifts across the quilt.
What is working for me:
Sort the color family light, medium, dark. sew darks to light. When I run out of one or the other, substitute the mediums. sew all blocks in 1 row of a block. For me, that's 8. 2+2, then 4+4. When I have 8 strips of 8 for full block, or 4 strips of 8 for half block, I leave them chained, so I know it's a "set". When I have a good bit done, move to ironing board. first block down, rest on top, seams up. Place 2 strips first position, set iron (setting seams first), place 2 more strips, move iron to 2nd set. Grab strip by next seam. flip it a bit, put into "setting" position, set 2nd strip. move iron. the iron sits on 2 at a time, for a decent amount of time while you reposition the 2nd two. Then seams up. water spray the unit. I push all seams away from the first light block, same direction the whole strip. That way, when I sew two strips (rows) together, they all oppose each other. then seams down & press the top. I let it set, while I am turning the next strip.
I start sewing with the first row on top all up (away from me) & on the feed dog side all down (toward me). Learned that from someone here, that the seam pushes against the under one. The rest of the seams will be the opposite, unless you sew on the left side of the strips instead of the right. When I start sewing (64) blocks together, the seams will still oppose.