Please don't do the PRO grill thing. It's really played out by now. The dealers around here all slap TRD wheels and PRO grills on the new SR5s so 75% of the "PROs" that I see are actually just funny looking brand new SR5s.
And your Trail/OR wheels are about as good as it gets. Machined aluminum that hides scratches well, 7.5"wide, and an awesome valve stem protector. The TRD wheels are functionally way worse in comparison.
I am actually tempted to pull my Pro grill off and just do the black out emblem instead. I agree that it is getting played out. I actually regret adding the Pro cosmetics as I now want different wheels as well.