I'd like to just trade for goods until we clear it with the High Council.
Making use of any knowledge traded is going to be a long process that we just plain can't start right now—Telepathica actions are tied up, and I'd expect at least a few research and training actions before we could even produce our own Apprentice grade.
Sure, we'd need to spend another year's diplo action to do the knowledge trade if we put it off, but diplo actions are cheap. I also really worry that if we piss people off by being too cavalier about our trade deals with the native Xenos, we're going to end up either chaffing under some burdensome regulations where we can't even blow our nose without a diplomacy campaign to get permission. We have an incredible amount of leeway right now in how we deal with the natives, and I'd be loathe to lose that flexibility going forward for a trade deal now.