Floral/Interior Design studio shoot- Lighting?

<p>Hi there,<br /> I wasn't sure if I should post this in beginner forums or here... since I am definitely a beginner with anything other than natural lighting. So forgive me if this should be there.<br /> I'm doing a shoot for my friends this weekend that are starting a floral/interior design for events company. They want some shots of them setting up arrangements, and a lot of the actual setup. We are going to do indoor and outdoor. The apartment is well lit, so I might not need any additional lighting. Is it recommended that I use additional lighting no matter what? I have a 580 exii speedlight flash, but that's it. I was contemplating purchasing an umbrellla and stand since that is the only other thing I have played around with. Then I could rent another flash or a pocket wizard. I'm pretty rusty with that stuff though.. I took a workshop months ago! Would a softbox be a good thing to try in this scenerio? I need to learn this stuff though, so I don't want to shy away from anything.<br /> I know this is a lighting forum- but I'm also not completely sure about what lens to shoot with. I have a Canon 40D with the kit lens (24-90mm) and the 50mm 1.8. I figure the kit lens is the best option.. but I'm open to renting a wide angle lens, which would probably be good right? I know that 50mm is not a good idea for the interior shots, unless I want some close up shots. Although.. some really nice super close up ones would be better with an actual macro lens.. right?<br /> I'm inserting an image of what I would like the interior shots to look like. Any thoughts/tips are appreciated!<br /> <img src="http://i169.photobucket.com/albums/u240/ahenness916/502673074_huWm6Hve_c.jpg" alt="" /></p>

<p>IMO it looks like window light is providing thew illumination, not an artificial source. Also, this particular is too monotone and confusing. Plus, the props they used are distracting, Better to cover them with a nice table cloth.</p>