Nice to meet you, my name is Daniel Harrington.
If I understand correctly you want pre-rendered sequences that would chain together seamlessly, triggered by your software.
The way I would go about this is creating the model of the avatar first from your specifications, showing you the basic progress and asking for feedback.
Once I have the model done to your satisfaction I will rig it depending on the actions he/she takes (we will have to of course discuss this).
After that's done comes the hard part, creating dozens of unique animations.
You'll have to provide me with details on how the software works, just a video demonstration will be enough uploaded to youtube or vimeo. I will need to know how many animations I have to create.
I do all of the modeling in 3dsmax with additional modeling in Zbrush, I texture with both Photoshop and 3dcoat. As for the animations and renders I'll be doing that in 3dsmax.
I think it would be prudent to also create an additional render of the avatar posing
with the kiosk or company/software logo, just an idea.
I would of course provide you with the raw project files/textures/animations along with the completed renders when all is done.
I hope to have further contact with you,
Sincerely,
Daniel Harrington, 3d/cg artist