Preamp that isn't noisy for Shure Sm7b

Hey everyone! I just got a $1000 grant for being selected to host a podcast! (cool, right?) I've got pretty decent amount of audio editing, but I've never done podcasting audio (from the microphone side). I picked up a Shure SM7B, it goes into a PreSonus TubePreV2 and into a Scarlett 2i2. My Shure is SUPER quiet... If it isn't going through a preamp, I get next to NO single at all. My friend told me that's how the SM7B was and to get a preamp. Not wanting to break the bank (I had studio monitors, headphones, microphone, and interfaces that I needed to buy), I picked up the Presonus. However, I have to turn the gain up SO high that even in a completely quiet room (took it to my friends recording studio) I still get some really annoying gain.



Do I need:

a) A new mic? (I'm still within my return policy). - recommendations for podcasting microphones welcome - but I'm not in the quietest room.

b) A new preamp? I'm willing to go up to 400-500 if you guys think it can make the difference.

c) Something I'm not currently thinking of.



Thank you guys so much for you help!



John

Preamp that isn't noisy for Shure Sm7b