Nerdfighteria and TFiOS movie casting!

This being my 2nd blog post, I would like to discuss one of my relatively new topics I'm interested in. After a long time I've spent on trying to get time to read,I have finally finished reading 'The Fault In Our Stars'. If you don't know what it is about,it's a book written by John Green,an author and a very famous YouTube vlogger. He and his brother Hank Green together form the vlogbrothers. The book is about a girl and her struggles through terminal cancer. If you haven't read the book,do not read ahead as there may be spoilers.
TFiOS brought tears to my eyes. I sobbed until my eyes turned red. It is one of the only books I've gotten emotionally attached to. Augustus Waters is one if the most ideal boy you would ever meet in the fictional world. And that's what I wanna a talk about. The TFiOS book is in the talks of recreating into a movie. This brings us the most important question... Who would play Hazel Grace Lancaster and Augustus Waters? As for Hazel Grace, John Green himself announced in a vlogbrothers video that she will be played by Shailene Woodley. Augustus Waters is yet to be cast.
This is my top guys who could play Augustus really well :-
1. Nicholas Hoult
2. Logan Lerman
3. Joshua Anthony Brand (rumored to be cast as Gus)
Although not totally confirmed,Joshua is rumored to be considered for the role. Augustus is such a fairy tale character, I hope they cast an actor that fulfills the imagination that millions of TFiOS fans have created. Let me know who do You think should be cast as Augustus.
Thank you!