So I heard back from the shop yesterday afternoon—they aren’t able to true the wheels because the majority of the spokes are rusted/frozen. They are the original wheels and aluminum spokes so I’m not too surprised. Problem now is is still like to use the 5 speed cassette on the rear wheel, and the wheels have those great Mallard hubs I don’t want to lose. They said they could order a set of new wheels for about $250 but I don’t know what build quality they’d be.
Thoughts on what to do?

Should have the frame back back this weekend after which I will start cleaning it and the rest of the components.