The spreadsheet looked fine to me. Feather dusters are mostly useless in bit tank, everyone, even my lfs says they disappear very quickly, melt away, or even get eaten.
SPS are incredibly hard, so first, learn how to test for magnesium, alkalinity and calcium along with all your normal tests. They need pristine conditions to grow and if they dont get it will crumple and die quickly.
If I were you I would start with soft corals and move into LPS corals, as they can be a little bit harder. Then after the year is up get your first sps an start getting 1 a month. Because its all about learning how much calcium they use up and making sure you replenish that and also making sure they get the right levels. They are EXTREMELY difficult and I got into them way to early, and that was 10 months in :(