I love it! All those fabrics..what a collection!
Just remember once you put a single stitch into this as a quilt or "fixed" top, it is no longer vintage, but NEW.
You might also find that the bright red sashing is also not original to the era of the blocks. Often times the blocks would be passed down, someone would add the sashing and still NO quilt.
In any case, the mistakes are wonderful, I would leave them alone!