It is possible I'm sure KassPurple. And I'm like you... flat iron won't tame that! I get waves at best.
Careful what you wish for Wildflower. Curly hair is quite a bit of work. Just finding shampoo that doesn't make it frizz into a "fro" is an ordeal and gets expensive to style. Even haircuts are a feat... you can get some very bad cuts. Straight hair is much stronger with less breakage. And 5 to 10 years to grow it to your shoulders, you gotta have patience.