If she's struggling in states like Iowa and Colorado what makes you think she's going to contest states like Georgia? The focus will be holding Obama states first and if your up expand the map.
That depends really, since Georgia is such a big state. I do agree however that Hillary's Iowa blues won't last that long. She'll spend a whole year there campaigning, and surely her numbers can just go up once she starts meeting real voters there. However, if that were not to be the case, and she would continue to struggle like hell in both Iowa and Colorado one year from now (though to be fair, no poll has yet shown any of her competitors even with a tiny lead in Colorado, at best Jeb Bush and Paul Ryan have been tied with her), however unlikely, while she would be slightly ahead of her opponents in Georgia and North Carolina, then it could be a better idea to spend time and money in those two states since they have way more electoral votes. With 16 and 15 each, they match the combined votes from Colorado and Iowa, at 9 and 6 each. Having said this, I think her numbers will improve in both Colorado and Iowa over the next months, so she should probably continue to focus her energy on those for now.
