Actually I have a slight problem with using HoA as a baseline, as I'm not entirely sure where it belongs, it's either around 300 years before WoK (Which I have been using as my baseline) or somewhere between 300-1300. The problem for me is the adjusted timeline for AoL being slightly after WoK instead of roughly the same time as Warbreaker, but AoL is also 300 years after HoA (mentioned in book) which would move the entire series of Mistborn up quite a bit, and also make it occur after Warbreaker although Brandon has stated that the books were chronological. so yeah I'm not entirely sure where the Mistborn series goes, although I think it's most likely set about 300 years pre-WoK.