Is my iPad a good enough Kindle?

After having exclusively used iBooks on my iPad Mini for reading books, I am now starting to realize that using the Kindle app instead may not be such a bad idea. Even though I like tech, I would normally have a hard time for instance buying a Kindle when I have a perfectly fine iPad, but I am starting to reconsider. Given the utter convenience of the Kindle and the total echo-system which is the Amazon store, convenience plays a major factor here, including the difference in weight and the ability to read outdoors.

Since I am starting to read The Martian now, I am considering using the Kindle app on my iPad to get acquainted to "The Amazon experience" of reading books. From what I can tell, there is a cool integration to Goodreads built into the app, but for some reason it only seems to work on books bought on Amazon and not books imported from other services.

I'm pretty sure that my reactions will find their way to the blog after finishing the book, and the experience will definitely impact whether or not I will be buying a Kindle in the near future as well.