Thanks! It's about 4 inches at the shortest in the back and about 10 inches at the longest in the front. After I spike it I'll be able to tell if I need to even out the lengths at all.
Well, I will probably end up cutting off a little bit of the length but probably not much, just enough to be even. And luckily, I have my husband to help me with standing it so it shouldn't be too much work.