@Maxim - Thank you for the feedback!
As far as sourcing goes, I got this lot of fixtures from facebook marketplace after waiting over a year and a half for a decent listing in my area to become available. You’d think F40T12 strip lights would be a pretty easily obtained fixture, but to get so many matching vintage ones is surprisingly difficult. The listing included the seven 1988 Lithonia C240s used in the install along with two similar 1987 units, a cheap shoplight, and a newer wraparound with broken diffuser, plus a bunch of newer and older lamps.
For switching, I just have the fixtures plugged into a small switch adapter thingy that plugs into an outlet. This is temporary until I can get a proper wiring setup installed (was planning to install the fixtures after that was done but decided to do them before). The fixtures are internally wired for two switches, but everything it just tied to one plug for the moment.