Tabletop Light Shed / Techniques

(Sorry if this is the wrong subforum - couldn't spot a better place.)

I probably should have posted first before making a purchase yesterday. But my goal is to take photographs of Lego on a tabletop. Lego is my other hobby and I'm trying to marry the two. I'm a photography novice btw. I pulled the trigger on this kit:

http://www.bhphotovideo.com/bnh/controller/home?O=orderHistory&A=details&Q=&sku=402604&is=REG

(I also ordered a nice manfrotto carbon fiber tripod and really right stuff head. That's not just for this but should cover all my needs.)

I've seen other people's photos with these types of "light tents" or "light sheds" (not sure if the generally accepted term). So I found an appropriately sized tent that would cover the size of things going inside. I also don't have any lighting and this came with some nice lamps that get acceptable if not decent reviews on their own.

My question is, do you all think this will be enough for what I want to do? Will I end up needing more or "better" lighting? I saw another guy's setup online, and he was using speedlights. I'm wondering if that would be more appropriate or necessary. I do need to learn more about speedlights and lighting techniques in general.

Also this one review on B&H says " I had to use ISO800 or higher in order to even get f/5.6 inside the shed with both lights on." And that confuses me. Why wouldn't he just use a longer exposure with a lower ISO?