I recommend walking 20-30 minutes for the next couple of days. This will help loosen up the legs and speed recovery. Depending on how you feel, you could do some easy jogging later in the week. Don't rush back into training hard. A couple of easy weeks would be good and you will not lose any gains you have made in previous training. 

What was your previous training regimen?

I've looked at the program, and since it worked for you and you were able to meet your goal, I suggest sticking with it. After you have recovered from this last race, start at week six of the program and that should get you to the next race. If you want to add 10% per week to the runs that will get you more distance, but you really don't have a lot of time to add much more mileage.

Good luck!

I would possibly suggest some changes, but would wait for results from the next race. I'll keep an eye out for your posted results.