Must be a damn yankee from NY. They seem to think they know everything.
I once gave a quote to a fresh damn yankee from NY and they wanted to know what work I would be doing in the summer time when the grass slows down. I laughed at the statement and told them to find some one else to take care of their lawn. I think that they have been through 6 cheapo lawn care people in the past 3 years.
Plant the seed now and let it green up for the next 2 months, watch it die when the temps hit 85 and then sod with SA.