I finally had some time to assemble this.  I also found that adhesive backed insulation.   I put it together as per your instructions and am getting 4.7TH/s with an 81 degree chip temperature.  I cut the boards 10 1/4" by 4 5/8th" by 1 1/4" thick.  I think my wedges are a little closer to the hash board than yours is, as my board was thicker.   It seems to be working just fine.