buying a microphone

I've got around 3000$ to buy new equipment. I want to buy a preamp and a mic. I record rap vocals and sometimes female's singing.

I have a PC with an M-Audio delta 66 soundcard and a Omni i/o. I record into Sonar.

I was thinking:

pre: Avalon 737sp.
mic: Shure Ksm44, or Something from Blue at around 1000$.

what do you guys think?

Ok. Setting up a small studio in the next 6 months for local bands to record on.

Now I expect to have mostly Rock->Heavy rock/metal and all in between but I will have some ambient and Rap here and there.

Now I need to out fit the studio with mics for all seasons.