I would suggest that you just order online and ask them to recommend the correct combination for your purpose.
http://www.uscomposites.com/index.html
There are a lot of epoxy and polyester resins suitable for both carbon or fiberglass. I don't suggest that you try to piece things together because there are so many varieties... thin, thick, clear, semi-clear, slow-, medium-, fast-dry, low shrink, high heat, etc.... just too many choices to consider for a casual diy'er. Also I don't remember ever seeing carbon fiber cloth and resin at a typical auto or hardware store.