I took some time to consolidate a couple of different spreadsheets I had, which helped me to track costs and anticipate when I needed to order certain items. This helped me also figure out when I needed to establish a loan because we tried to make it as far along as we could before we had to borrow. I hope this spreadsheet can be helpful for future builders. Enjoy and feel free to modify and use it as necessary. You can plug in your own values and everything dynamically updates.
Download here (open with Excel not Google docs)