Help defining parts needed

Hey gang just wanted some opinions on what all I need to replace when doing the rear wheel bearings on my 04 sequoia. The number I listed in front of the part refers to the part listed in the diagram I included. For both sides I know I'll only need 2 of each part not the number in front of it...

Following is a list of parts I know I'll need.
2 rear bearing housing
3 bearing housing o ring
5 oil seal

should I also replace these items recommended by a dealer as well?
8 Bearing retainer
10 Bearing retainer lock ring
6 Oil seal spacer
11 Abs ring

Lastly, has anyone ever bought parts from yotashop.com? They claim they have oem complete kits available but koyo is listed as the bearings being used. I'm leaning towards getting oem from an online dealer because this looks like an aftermarket branded kit.
https://www.yotashop.com/wheel-bearing-toyota-sequoia-oem-rear-wheel-bearing-kit-2001-2007-kit-1063/

Thanks for any input on this.

 

I might be mistaken, but I believe Koyo is the OEM bearing manufacturer.

 

Based on the dealer recommended parts list, item number 9 isn't listed and I'm also not sure why if they recommend I replace pretty much every other part from the bearing housing to the dust shield.


Edit: looks like there are 2 retainers, one outer and one inner. But based on Toyota dealers recommended parts list I'm not replacing the outer retainer?