Never floated it this time of year but the first couple days had the same look as the first couple days of Deso. Lot's of areas where standing water from this years high water could be breedingn clouds of blood suckers. I'd go prepared for it to be bad. long sleeves, pants and even head nets.
As to weather, we're getting into Monsoon season and short afternoon downpours are a good possability. Go prepared for that too.
I've found this to be a great no permit Autumn flat water float trip, but if this is the time you have then what the hell, give it a go!