Make sure to buy quality equipment. Things should be done professionally so the quality of the picture comes out on target all the time. Go to
http://www.bhphotovideo.com for all your video needs. I recommend tungten lighting at least 1000 watts with umbrellas. Ive never purchased backdrops so I cant help you on that end.
I have printable model release forms if you want to hit me on icq 48533292 I'lll give them to you. I prefer indoor video with good lighting but if it's nice and sunny out make sure the camera has it's UV filter on and your picture will come out really nice.