I was made aware of the general time that the chassis would enter the facility after it came back from Moryde. So I stayed in contact with Joe Eash and he let me know when it started the Dynamax build. Hope that helps.
We ordered our DX3 in the first week of August 2017. It arrived at the dealer in the last week of January 2018 and we were able to pick it up in February after most of the items in our PDI had been corrected. That may give you some insight on the timeframe necessary. Then again, maybe not. LOL
As to the build photos, we made contact with Joe Eash who is (or was at that time) the western sales representative. He kept us informed weekly as to the build status of our rig and sent us lots of pictures. Joe will be a far better source of information as to when your Isata will be ready for delivery.
Congratulations and good luck with your new Isata 5. Look to see you at one of the rally's.