Dad bought his '68 Camaro SS convertible new (he ordered it). Red, white top, white interior (solid white, not houndstooth, apparently a rarity), 396, the works. Sticker was $4500 on a base price of $2800, so it was pretty well loaded. He sold it in 1984 to someone that still lives in our home town, and he still talks about it.
The CTS-V coupe is a fantastic idea, but the sticker price on those is out of Camaro territory by a good 1.5x.
People seem to hav zoned in on golf, but ease of entry/exit seems to be the bigger problem to solve. I seriously doubt the Camaro will be that much easier to get in or out of, going by my only experience of sitting in one at an auto show. The "extended test drive" is a great idea. That said I do understand about entry and exit. I rather enjoy watching people attempt to do that in my Solstice
Losing the folding top would be a deal-breaker for me.
Given that the money seems to be a wash, this is not necessarily a "rational" decision you can make by looking at spec. sheets. You're going to need some seat time in a new Camaro.
Not nearly the same, but last year I had to get another driver/inclement weather car. I drove an '03 BMW 325xi, and it was okay (and having driven BMWs plenty, was exactly what I expected). I then drove an '07 Subaru Outback, and as soon as I got in the Subie I knew I was going to buy it.
A long time ago I had a '94 Cavalier Z24 convertible. I fell into a very, very clean '94 Trans Am (LT1, 6-speed, bright red). I struggled with whether to trade for a couple of days before figuring out that if it was this much of a conundrum, I shouldn't do it. In retrospect I'm glad I kept my convertible.
Dad ordered a 1982 Chevrolet S-10 truck, Sport model, and I was with him the day in May when he took delivery. I learned to drive in it. It's sitting in my driveway right now. Barring catastrophe, it's not going anywhere. Is it valuable? It's pretty slick, but probably only valuable to me.
If you get the giggles when you sit in the Camaro, and (given your level of mods to your Kappa) you start having ideas on how to modifiy it, I'd buy it. If you're fretting about losing the Kappa, don't trade.