Bryce, while you say you can't afford a dedicated server, 100-175 GB transfer is a lot of transfer to handle for shared hosting environment.

There are dedicated companies though that would cost you less than $100 per month and that will actually give you more than 500-600 GB of monthly transfer.

One of the best known are:

www.server4you.com - 700 GB - $49 per month
www.ev1servers.net - 700 GB - $89 per month
www.dedicatednow.com - 500 GB - $99 per month

I'm sure there are someone here at this forum who can come up with a plan for you as well. Good luck in shopping.

Best,