How long has the war lasted in general?
5 - Excellent
4 - Good
3 - Meh
2 - Badz
1 - Terribadz
It's only been a few days in Naruto world time. Remember nearly half of both armies were destroyed in the first day, which it totally bogus. The previous Ninja world wars lasted years, Kishimoto clearly didn't think that one through.
In terms, of the number of chapters, it has been 144 chapters since Gaara's speech (which is what I would count as the majority of the war). So yeah, the war has been about as reasonable of a time frame as the the 5 minute Frieza fight that lasted 10 episodes in dragon ball z.