I sought help for exactly this in the Devonthink forum and had some great help (especially from DTLow). I used the script in this link, as well as keyboard maestro, better touch tool and shortcuts, to:
Create a project number (script in link) in Numbers doc in Devonthink
add client name, contact, description, etc. in Devonthink
Create folders in Devonthink 3 (script in link)
Create project folders in the finder.(script in link)
Create a project in Timing (shortcuts).
Create a new entry with the project name in reminders (shortcuts).
(This has easily saved me 15 minutes every project.) There may be something in the original script to get you going. I hope it’s appropriate to link to the Devonthink forum … Devonthink forum link. Hope this helps.