1) you can either set up slit or v notch on the seam, however, it is much more easy to print self adhesive labels and apply during plasma cutting. super easy and low-level worker compatibile

2) there is variable "sheet used " on nest prints, where you see exactl length of sheet needed

3) step by step described in the help file, how to set up this kind of report using filters and calculation

4) use another CID. EX CID 866 has more options for straight.