The Arms Race: Who are you?

[Lord of the Isles]

You are sure a beanie. I only have 6 and I think that's a lot at times, sometimes there isn't "more" to research.

It's a slow day at work, so even a 'beanie' pun got a laugh

Since I've been unable to get beyond turn 54 in any game due to CTDs, can one of you lucky people who don't have these issues tell me how the 200 turns of the Grand Campaign fits with the technology tree? Do you finish researching everything by 1780, or are there still things you cannot get done by game end? And how about technology trading with other powers: it seems to get harder as the early years unfold, but perhaps that changes later?

Different estimated answers for different numbers of schools/colleges/universities welcome.