Setup different due dates for different profiles

Summary:

We have 3 different due dates for our Profiles

1. Recon is due on 10th Day on the regular month and 15th day on the quarter end month, we are able to achieve this by adjusting the end dates for the periods and date offsets on the Profiles.
2. Recons are due on 7th business day of the month, we are able to achieve this by defining the work week in our calendar.
3. Recons are due on 10th calendar day of the month, no holidays or weekends are accounted for.

We need help with requirement #3 above, as we have already setup our workweeks for our calendar, we cannot set the Calendar day. We need to create a dynamic value using the rules. Has any one achieved this or have any pointers on how to set this up using rules?