Honestly, theres no one on here except you that knows which lenses will be the most useful/important. If you don't know which lenses you want, or why, I'd suggest shooting for a while and finding out specifically what you're lacking in the lenses you have now. If you just feel like buying lenses to help you progress, save your money and find out what you'll really need/use instead of just spending money because you feel like you need to.
I saved for almost a year to pick up a 70-200 vr because I thought I needed it. Every successful shooter had one (70-200 or 80-200), I saw it as a dependable 'staple lens' that every photographer needed and utilized. Bought it, and realized that I really didn't need it or like using the focal length. Don't know if that helps, but the point is, buy lenses when you feel they will allow you to expand your abilities, not when you feel like you don't have enough lenses.