All, the links in the OP no longer work for pictures. Here is a current higher quality set of my lawn. I apologize if the sun is still an issue, but they should be sharper and more detailed to zoom in. I took some pictures of some weeds as well as an overview of how my lawn is currently. My questions from the OP still remain though.

Album: http://imgur.com/a/dLk02

I'm going to guess that the grass you're calling coarse tall fescue may be orchard grass. It seems to have a line down the middle of the leaf which fescue doesn't have. Use this tool to identify it. The dark green clumps (the "good looking" grass) could be the fescue you planted. In any event, it's late to be planting any cool season grass now. Wait until mid to late August. It sounds like you don't have irrigation and aren't home during the day to water. When you plant grass in the early fall you can set up hoses and sprinklers with a timer to give light waterings during the germination period. It would be hard to do that on 15000 square feet, but it would help whatever section you can manage. Where you can't do the frequent watering, use some kind of seed protection (peat moss, compost, Seed Moist, etc) and water when you can. I would not worry about weeds now. Any roots in the ground are good and you have a lot of bare spots. Let weeds grow wherever they will and just keep them mowed. In early August you can go around with glyphosate and spot spray your weeds. Some spray will get on the good grass too but you'll be overseeding so the new grass will replace it. Right before seeding, mow low, bagging your clippings. To soften up your hard ground, try spraying baby shampoo in a hose end sprayer (3 oz/k).

I'm going to guess that the grass you're calling coarse tall fescue may be orchard grass. It seems to have a line down the middle of the leaf which fescue doesn't have. Use this tool to identify it. The dark green clumps (the "good looking" grass) could be the fescue you planted. In any event, it's late to be planting any cool season grass now. Wait until mid to late August. It sounds like you don't have irrigation and aren't home during the day to water. When you plant grass in the early fall you can set up hoses and sprinklers with a timer to give light waterings during the germination period. It would be hard to do that on 15000 square feet, but it would help whatever section you can manage. Where you can't do the frequent watering, use some kind of seed protection (peat moss, compost, Seed Moist, etc) and water when you can. I would not worry about weeds now. Any roots in the ground are good and you have a lot of bare spots. Let weeds grow wherever they will and just keep them mowed. In early August you can go around with glyphosate and spot spray your weeds. Some spray will get on the good grass too but you'll be overseeding so the new grass will replace it. Right before seeding, mow low, bagging your clippings. To soften up your hard ground, try spraying baby shampoo in a hose end sprayer (3 oz/k).