The extra tech cities are definitely necessary here. Even just one or two extra drastically increases chances of finding tech.
Then the rest of the education buildings could be sold to better advance those new cities to give some extra SIM in them.
Hopefully he decides something like this route and can start discovering with 3rd edition tech trees coming soon.
Yeah, there's seems little point in selling those education buildings at today's market prices. It's a shame, because he probably paid a hefty sum for them.
The best thing to do is go full on 3rd edition tech from multiple cities now.
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