It took me three damn hours to read this... and I loved every second of it. I really like how much more mature Naruto is here compared with his 'I'm gonna save everyone no matter what' canon attitude. Indeed, your version of Naruto has to make tough choices that force him to grow up, instead of remaining a blind optimistic brat.
On a side note, as for a manga with great support characters who get their fair share of awesome momments, I'd recommend 'Dragon Quest - Dai no Daibouken'