ET Team 3 Wheels certainly are nice, but not for the budget minded.
I think the old steel slots you found will be a good look with slots up front. Nit sure how the tire and wheels fit the rear yet, but as long as they don't stick out way too far they should go well with your build. I like the rear tires out a little, but more than about 2" doesn't look right to my eyes. I prefer about 1"-1.5" usually.Man, I love those rims. I am definitely budget mined. I am keeping my skinnies up front which is a chevy rally rim, and I really like the 15x10's out back. Maybe I just should look at some 15x8's
Since tires don't seal on the outside where screws go through, they should still hold air without tubes. Tires seal on the lower part of the wheels, not the vertical edge.I have to check bolt pattern. also wheels have been drilled to screw in slicks. So tubes will be needed.
I love that Camaro! I am going to have an abs backplate to close the holes up a little and like you, bag them when I wash the car.Good luck with the gauge pod Dave. I hope you have better luck with interior gauges mounted exterior than most guys have! Or at least avoid water when washing, or getting caught in the rain occasionally! Had them in chrome waterproof pods on my '71 Camaro, and always bagged the gauges when washing my car. But the lens still fogged up, and took days to eventually dry out.