Well, I don't know how much help I will be, but I recently experimented with a patch in my backyard that got some sun, but I am assuming the previous neighbors just did not want to deal with it. I divided the patch into two sections...In one section, I used
Pennington Seeds Penkoted Fall Sun & Shade mixture, in the other section, I used
Scotts Patchmaster Sun & Shade All in one. Well, let me just say that the Pennington was pretty much grown within a week and a half, while I am still waiting for the Scotts to fully fill in. The patches are right next to each other, so they were watered the same amount of time. So, if I had to recommend a
seed, I would recommend whatever penkoted
seed Pennington offers for your region.
As far as watering, the average your grass will need is an inch of water a week to remain green. Depending on the intensity of your heat, you may need to water more.
I have an image. I will try to post it shortly...