Hi, I'm Matt and can do the SVG file with embedded animations for you (22 years a webmaster, 3+ years doing animations/visualizations with HTML5, CSS3, SVG and javascript GreenSock library).
I would like to see your animation first. I understand you need two final SVGs yet cannot depict how you are animating the PNG (with sprites in it).
Final SVGs will animate fine in Firefox, Chrome and Safari, plus latest versions of Internet Explorer.
Looking forward to your reply,
Matt