This length is a piece of cake to grow out.
http://www.theage.com.au/ffximage/2007/12/17/katie_posh_narrowweb__300x368,0.jpg
And I think that or longer would be really nice on QT.
When I cut my hair off I had the back like a regular bob ending at the nap of my neck and the angle follow the shape of my jawline just below my chin and I was still able to pull it into a pony tail.
Now it's really long and it still seems to work down as a grown out angled bob.
Posh's really short cut has that duck tail and that is a bitch to grow out for sure.
Why don't you just get it even out?