All looks nice and straight..nice job !! Yes, laying block will make you a old man quickly. I have a Lowes mixer i use for big jobs like this. Is there any reason you didn't put re-bar in the footer sticking up to reinforce the blocks ? Keep up the good work !
With the blocks on the footer, tied to the 6" slab, tied to the 3 course of block on top, I don't think it will go anywhere. And I am considering changing the first 12' floor to be all block walls, then the top be 2x8's, with a 2x3 eve on front and side. That way I can put recessed lights in. That will also transition from the lower stucco to the upper siding.