Finished Eagle Mountain this morning and I like it very much.
I had some difficulties in the beginning with using tools too early and figuring out the mini-game. The challenge on live servers might be to get a second one with the experiene from beta. For non-beta-players anyway it shouldn't be a big deal to get at least one building finished.
Anyway tools-packages seem much too expensive, I couldn't buy any and was just buying single tools when reasonable.
Pro-Tipp: Don't do it before coffee
one single click can mess up the whole board