You forgot roll pin punches and torque wrench.do you already have the tools? unless you have them or know someone who will do it free, I would just get one assembled like the one Maine posted there.
If you build that yourself, you will need:
upper vice block
finish chamber reamer
go/no go gauges
but those parts look like fair prices to me, I don't see any issue with anything there. What lower are you looking at, just curious