Download offline web page and view on iPad
I would start with Safari's reading list feature:


http://support.apple.com/kb/TI39


It is built into the OS but doesn't integrate well with the Chrome app as you asked. You also might need to do some code changes to have all the features you desire work in offline mode, but since web apps were the first iOS app Apple created, there is lots of documentation at https://developer.apple.com/Safari

The iOS version of Opera has a save for offline option.