I need recommendations on quick lawn repair. How can I level it quickly?

My son is getting married on October 22. It will be a backyard wedding. The lawn area where the chairs will be is 30' by 60'. It was new sod when we bought the house a year ago.

Since then, the gophers have done their damage - several holes and mounds per week. The dogs used to dig trenches to try to get to the gophers.

I have filled all holes, and can pretty well keep up with the new ones. The dogs are no longer digging. The remaining problem is the uneven remnants of all of these repairs. I am looking for safety, not for beauty.

With a wedding coming up in 4-1/2 weeks, I need to level the lawn. Yesterday I walked all around with a wheel barrow full of dirt, filling in low spots, evening it out with the hose.

I appreciate any recommendations, short of re-sodding 1800 sq. ft. What would you do to make the lawn safer for high-heeled guests?
Is 4 weeks long enough to get some new sprouts going, too, or should I only work on leveling?

Thank you, thank you, thank you.

Brian