looks okay to me. i get the need to make a program that fits you directly.
While I respect the cube, it was designed by someone focused on high level competition lifting for himself. It translates to others, but a smaller group than a published book implies...
not sure about "speed deadlifts" maybe do pulls from blocks against bands or just do cleans, etc. that's up to you though.
speed work is supposed to be good neuro prep for heavy lifting...depending on the lifter, speed work at the end may not work as well....again, up to you.
"...strength is built one recovery day at a time..." -OMP