Timer start event, 5th of Month or following Monday

I have a process that should start at 8am on the 5th of each month, unless the 5th falls on the weekend. If the 5th falls on Sat or Sun, the process should start on the following Monday.

Witout the end of week complication, the cron expression would be “0 8 5 * *”.

I’ll keep digging but any help would be appreciated.