Housing Goal Calculator

I made a housing goal calculator for my FC that can be used to project, using 1 and 7 day rolling estimates and based on rate of growth of your FC's bank and the deprecation of the value of a plot, when you'll be able to afford the land and report it visually, so that FC members can have a more direct, tangible goal than "make moar gil nao~!". I'm sharing it below so you can use it too, if you think it's a good idea.

I am aware that the 0.14% cost depreciation may not be perfectly accurate, so it is included as a variable if updated information is provided / gathered.

All you need to do to use it is update the balance of your FC chest / total saved gil daily.

Screenshots:

http://s21.postimg.org/k6kou9hw7/housing1.png

http://s18.postimg.org/g7gjqyo21/housing2.png

Usage:

Sign in to your Google account and click this link:
http://goo.gl/8oVvl6

It will open the spreadsheet and make a copy in your drive that you're free to edit. You can publish it to the web using Drive's functions and share the link read-only with the rest of your FC, if you want.

I welcome feedback; I whipped this up pretty quickly so if anything doesn't work or if you'd like to see improvements please contact me =)

So cool! :D