Could someone check this wiring diagram for outlets/switch?
I'd just use 14/3 throughout
If I were in your shoes, I'd use 14/3 throughout this circuit (homerun aside of course) with black as the always hot, red as the switched-hot, and white as the neutral.  Why? Well, someone down the road, maybe even you, might want to change one or more of the receptacles to constant power from being switched, and without always-hot available at all locations, that's going to have a good chance of requiring the wiring to be rerun.  It also simplifies the color-coding of the wires, which helps you keep track of things so you don't have surprises with regards to the behavior of the switch.