Thank you for your lists!
I will surely buy the metalic ones, the silver, boltgun and gold.
I'll also buy the washes you recommend.
As I don't quite know what I will be painting, I'll try to buy every possible colour (I mean, red, brown, black, white, green, yellow, blue... at least one of each).
I still don't get what's good about foundation, I keep reading you gotta thin your paint and do lots of passes... but with foundation it seems you need less passes...