Lump Sum Payment on Student Loans?

I owe 57,000 in federal loans at 6.8%

I have been in the Public Student Loan Forgiveness program for approximately 3 years.

I am getting married, and once our incomes are combined my repayments go from 280 a month to the full rate of 700 a month. I've essentially been making interest only, or less, payments every month.

I am not sure where my next career move will take me (public or private sector).

I have some savings that I could put toward a lump sum payment to start paying this down and make monthly payments more manageable once we get married. If I put 15k down they appear to go to about 500 a month, more from there.

I am considering putting a lump sum down so that we 1) pay less interest over time and 2) hopefully pay them off faster.

I feel like I am missing something here. Would this be wise?