Personally, I think you need to swap out the A fabric.
While muted is great for the style of the quilt, you can hardly see the actual square in a square piecing in the block.
The block looks nicer in the 1st pic than the actual block does - and I don't think the white would be good substitute.
The bright white would take away from those banners - which I'm sure someone here can embroider for you.
You just need to go a bit lighter for the tan fabric, so it contracts nicely with the B fabric (just like your original picture)
I think your family photos and 9 patch blocks look fabulous.
You did a terrific job in designing a really striking layout, and your family is going to love and treasure it for years to come.
And welcome!!