Rather than purchasing the odd Mole lamps, a kit might be a better choice and a better value for a small setup such as this.
A kit (I like Arri, but there are other brands. ) consisting of a 1K, 1 650 and 2 300s (+ a Chimera) would be ideal for your setup. Set up the 1K in the Chimera as your key. The Chimera will give you some good soft light with plenty of spread. Use the 650 for fill (or bounce the 650 off a white card) and use the 300s for backlight. Bring spun glass, opal and 216 for diffusion, and CTB/CTO for color temperature purposes.
Might be odd to have them both sitting on the couch. One on the couch and one on a chair would be better for lighting and shooting purposes. Just use a basic 3 point lighting setup. You'll know what to do.
Kevin Monahan
Social Support Lead, DV Products
Adobe
Adobe After Effects
Adobe Premiere Pro
Adobe After Effects and Premiere Pro Community Blog
Follow Me on Twitter!