This spreadsheet keeps track of the build status of the ArdaCraft project. It is split up by tabs according to region, and every location is given a value according to its size (and therefore length of time it will take) to give the most accurate estimation possible. There is also an Overall Completion tab, but that is less accurate as it weighs each region the same - even though Gondor will be more work than Rohan, for example.
If you notice any locations that are missing, please post below! Many thanks to lizzy for putting this sheet together for us.