hello,
I am a professional fence installer. I am a bit out of range of ms though, but i will give a few tips.
The time it should take depends on the weather, tools the contractor owns, and how busy the contractor is. I would expect the posts to be set in concrete in one day.
Most likely the contractor will wait a day or two for the concrete to harden, (while working on another project). Again it should only take one more day to install 150 feet of this type of fence.
Most fencing contractors do not like to use materials bought by the customer, so a few contractors will not be interested.
Any good fencing contractor will be at least 2-3 weeks getting to your project. So i figure it should take no more than 2 -3 days of actually working on your project, if conditions are normal.
The best thing you could do is have them to build a chainlink fence, the cover it with the chicken wire.