I really like it. Chrome generally doesn't work on a 4Runner but it looks pretty good. I think you're on the right track with the Spidertrax. You're far enough into the chrome theme that blackout/monochrome is out and that's ok. Possible exception: the headlights.
The thing about removing the nerf bars is all it does is make it hard to get in and out. Most of the time if "no-nerfs" allowed you to clear something the gas tank would be dragging. They also hide the low hanging gas tank. (The gas tank install just bugs the heck out of me, can you tell?) IMHO, If you take the nerfs off then the Westin may not look right too...
I don't know what I would do but I'm not 'feeling-the-love for the taillight guards'. While the nerfs aren't sliders they look pretty good IMHO.
I know you put on Sport rims which are nice but maybe some black/silver rim combo would fix it up.