My builder is almost 50 and I'm about 200K away from Lev3 Medicine, with Lev2 Science. First off, should I wait until I have enough TP for Lev3 Science, then hope I make 250K for Medicine? Or just keep plugging away at the slower rate until I make it in time?

But it looks like in either case my builder will die of old age. She's done most of the projects, I just lack a 3rd hut and the temple... if she dies do I have any hope of getting a Master Builder?