This is great. The caps are on order. Should see them early next week.
I spent a lot of time looking for a cost effective delay on time module. The closest I came to a solution was the delay on modules used for cars. Problem was to change the delay required changing a cap. Never could find a chart of caps and time delays. With the solution you have come up with it will still be less than $1.50 each and changing the timing is a breeze with the dip switches.
So for now it is back to watching the mail box.