Yeah, that's the route I opted to go too.. I cancelled my boot order, which was around $40 and bought both control arms (OEM) for $400 shipped. 4runner has 150k miles, it's probably better to just do all of my suspension work now as much as I don't want to.
I have a torn dust cover on my 2017 that I plan to replace the boot on... I'm curious, what grease did you use, and how extensive is the process? It has just shy of 150k miles, so I was considering just replacing the control arms.