Sorry for necro'ing this thread, but I can't resist posting this neat little game where I got my 5th province at turn 12, based on remake + highways:
http://dominion.isotropic.org/gamelog/201204/15/game-20120415-163135-42ce1212.htmlObviously I had a bit of shuffle luck, and my opponent didn't play optimally, but it was still fun.
Short version: I opened remake/ambassador, then rushed to get highways, in order to remake
1. copper->wishing wells, then later
2. anything -> more highways, until i had 7, and finally
3. anything -> provinces.
(I also did buy a province with a silver at turn 11, my only treasure left at that point. Expand helped finish off the game, otherwise i would have rebuilt my economy via wishing wells/treasuries to finish of the remaining provinces.)