I posted a similar question here about 3 weeks ago and didn't get much for replies. I'm south of nashville and have been looking at seed blends. The one I think I will settle on is one of the rebel fescue blends. They are mostly TTTF with a little rye as a nursery seed and KYB for spreading. Straigh KYB lawns up north are gorgeous and grow fast, and nearly never need overseeding. I figure this mix would work well, and it's not prohibitively expensive, but I don't know how the blue would hold up in the heat.
I hope this helps.