Hosting
 

From all the research I have done, the one thing I cant figure out is how much bandwidth I can expect to use. I have found all sorts of recommendations for various hosts, but I would much rather do my own management, and go with something such as a rackshack account. The majority of rackshack packages allow 700GB monthly transfer, is this sufficient for starting out, and not something I will surpass, if I get a good amount of traffic?

I plan on running niche sites, and one-model-sites with exclusive material.

You probably wont exceed 700 GB any time soon if you are just starting out so that's a pretty safe estimate. If you wanted to go with a virtual package check out www.realitychecknetwork.com/virtual.html otherwise though 700GB should be plenty for your first few months.