For point #6: When you make the Iso, click on the "Advanced" button, and then select the option to export the table to a file type of your choosing (Excel, TXT, CSV etc)
#7: Placing Valves has a dynamic input, you nominate the line and dynamic inputs appear for dimensions from certain points of the line you are putting it on
#8: Isometrics aren't to scale, and it will work out how to place the line on the Iso for best clarity
#9: Again, for clarity it will work it out. If it doesn't work out how you want it, perhaps place your own line breaks and then you can define how many Isometrics are produced
Hope this helps somewhat.
Plant Solutions Engineer
Autodesk Australia / New Zealand