Welcome from FL!
Looks like a previous owner did a Denali-style grille insert, so luckily that is a simple bolt-off job.
As for the mirror and door handle covers, they should just peel off, may need to do some paint correction underneath depending on what the previous owner used to adhere them.
Speaking of Denali, their bumpers are color matched and its a simple swap if you come across a good condition bumper cover and fog light set. If not, I've always been a fan of the Silverado SS style bumpers with only the chrome air vents at the bottom. which could also be painted.
If you decide to paint that chrome bumper just make sure you do some solid prep work, even with media blasting and adhesive promotor I've never seen paint over chrome last long and any rock chips will reveal nice shiny specs and it starts looking bad fast.
There is a TON of knowledge on this forum, can't wait to see the progress of your build. Happy modding