It certainly is a reasonable plan. Personally, I would like to see a set of 6 quarterly matching public offerings, to get things done by the end of 2020.....rather than wait another 2 1/2 to 3 1/2 years after that.
I think that would also be a better approach in terms of capitalizing on a healthy housing market, as opposed to conceding the possibility that the housing market is weak at the end of 4-5 years....which would make capital harder to raise in that one final swoop.