For pics, your DReb is fine. But with the 1.6 crop, you're going to want something uber wide, esp if you're shooting in a small space. I kinda like the images from the Sigma 10-20mm ultra wide zoom lens. It's under $500 too. For video, you might want to consider the Canon XH-A1. It's about $4k MSRP though (but you can find them in the mid $3k's). It's like having a 5DMkII except more geared toward video. Check this one out:
http://vimeo.com/5694952?hd=1