Thanks everyone for the feedback.
Received the Bumpers from Costco, they seem decent enough but have a bit of grease still on them - even after a few cleanings with Lysol. Will give it another few go's.
Overall my budget gym is coming along well.. I ended up getting the Fitness Reality Bench/Rack combo from Walmart for <$500, and I must say both feel solid.
I got a Marcy all in one from FB Marketplace from someone who didn't charge me extortion pricing for it, just need to set it up.
Last pieces are a Bar (Fitness Depot), some Lock-Jaws, a set of 5's and 2.5's (2") and I think that's it! Can't wait for it to be up and running.