I"m exclusively a truck guy, so I can't really advise on that swap. However, it sounds pretty much perfect. The camaro tune and accessory package should be a much better fit than a generic vortec engine. As far as value, keep in mind that you might never have a chance at something like that again. A driveable donor car, complete drivetrain package, car accessories, manual tranny, and relatively low miles to boot.
If you get it, at least give a cursory thought to swapping the front suspension and steering over. It might be impossible, going from a unibody to a chassis, but it would be worth thinking about.