So you just "got yourself into a little home build project." Haha I've built a few of those! People often fail to realise how much input they need to give on a home build. There are a LOT of decisions to make. Unless you want to drop the cash and have an architect or designer make all the decisions for you, you'll be working hard to keep up with the builder's requests for decisions. The earlier you start thinking about finishes, colours, appliances and so on, the more options you have. Putting off decisions for later means project delays, rush shipping costs, higher prices, fewer choices.