"- Price is on study right now: It's quite difficult for me as I'm lacking solid comparison reference."

I understand. I think many user could use it a few days per year only for some tricky textures and other (game development) could use it daily. For example crazybump is something that will be used more often, because it based on simple textures from all resources. Photosculpt needs a good real world source.
The biggest benefit by photosculpt could find user who create texture and sell texture collections. Maybe you add a license type for this kind of users (Arroway.de could be one) for selling textures created by photosculpt.

"- Octane Render : I need to study that. They have low price and outperform the competition is this right?"

Yes, rendering per graphic card seems to be the future. Many graphic cards could plug in one computer and the power could be very impressiv.

"- When : as soon as possible, after all testing is performed, hopefully before summer."

It could be good if you note it at your web page. I assumed "soon" means days or some weeks only. ;)