If I had to pick a winning score for the Gophers I would agree with your Gophers at 28 and GSU at 21.
My first prediction was GSU 31 - Gophers 28. I will now have to amend that due to our QB being out and GSU not progressing as fast as I thought they would.
Thanks for the close score in the 30s but with our 1st string QB out I don't know about GSU hitting 35 points unless the Gophers defense id poorly prepared.