Good idea on the photoshoot, but those images are all overcooked. HDR is a fine art and all of those are showing halo's around the subject. A proper HDR imade consists of at least 3, but usually 5 images to get the correct exposure to make the highlights and lowlights stand out on their own. Sometime the image just spreaks for itself with little or no post production. Here's some I did last year for Belfast Honda when they had a CB1000R painted up in Playboy colours, Shot with a D300, the basic 50mm f1.8 and 2xSB-600's
If you're ever over in the Belfast direction gimme a shout, more than happy too and I don't even charge ;-)