The Future of AllThingsFinancial

I took the first step towards setting up AllThingsFinancial on its own. I registered AllThingsFinancialBlog.com (it's not an active address yet) for 5 years. Now I'm looking for a host, which is both confusing and intimidating.

I have heard of Dreamhost and TypePad. Jim at Bargaineering uses Dreamhost and has told me that he is happy with it. My main questions are:

1. How much space is enough? Is 2400 megabytes large enough? What does that mean?

2. What about bandwidth? What does that mean? I have ambitions to make AllThingsFinancial grow but I want to be realistic. I don't want to buy a bunch of extra storage and bandwidth if I won't need it.

3. Anyone using TypePad or Dreamhost?

4. Is MoveableType or WordPress better? Is there another programming language that I'm not thinking of?

What other issues should I think about?