If your going to use a pre emergent you have to wait to seed at least 6-12 weeks before seeding it will kill the seeds :)

Ok, definitely noted. I desperately need to put some seed down, so should I hold off on the pre-emergent as a whole? Should I put pre-emergent only on the spots where I am not putting seed?

Maybe it should be better to put seed down and just put pre-emergent down a few weeks later? Clearly the best time to seed will be when I do the aeration...

Thoughts? I really would like input on the type of fertilizer to put when I put the seeds. Should I put something of a "lawn starter" fertilizer, or just continue with the nitrogen only fertilizer?

You should wait for input from texasweed, dchall or one of the other warm grass folks. Seems to me that bemuda grass sod (if that is what you have) and bermuda seed don't play well together. They can also tell you if there are any pre-Ms that can be used with warm season grasses.
You could also google "the bermuda bible" and see if you can find anything in it that helps.

I wish I could drag texasweed into here, lol.

You do not want to apply pre-M and then shortly after core aerate. Core aeration is done BEFORE pre-M is applied. As mentioned by grass1950 a bermuda sodded-lawn (possibly what you have) is not to be seeded upon as they are 2 strains and will make it look awful.

I think your plans are OK, I'd just change the order a bit and remove the seeding altogether. On 4/27 I'd recommend core aerating the compact areas, top dress with your compost/sand, and apply pre-M. Then on 5/12 apply the fertilizer.

Is there reasoning behind this "aerate before pre-m"? I am trying to research and learn a lot about these things, but I have not heard an order of operations comparing these 2 items. Can you elaborate on why this is the case?

What if I just didn't do pre-M? What if I just did my thing with seeds/sprigs and put some MSMA down at some point to kill the weeds that are still alive. I could still put the pre-m down in the fall, and i can guarantee that it will not affect my grass rehabilitation process.

Also, if I dont fertilize until 5/12, that will be 6 weeks between fertilizing, and I intend to fertilize once a month this growing season since I didnt fertilize but once last season. Because I was ignorant. Either way, I feel that is too long, and I also have read that fertilizing with the core aeration is a good practice.

Lastly, what if I were to break up some sod into sprigs and plant them in the holes in the bare areas? This seems like the better idea. I dont know the "Strand" of bermuda currently in my lawn, but I have already placed a few pieces of sod from a local nursery. I hope it wont make things look funny. But does breaking the sod into sprigs sound like a good idea? Or should I seed and just not do pre-m? Would the pre-m put down in early March affect the seed growth this late in the game? It is 2 months later. I would think not...

THanks for the responses everybody!

Yes. When you apply a pre-M it is essentially creating a soil barrier where any seed is either already coated or will come in contact with soil that has been coated (say if blown in from a neighbor's yard). Think of it like a blanket. Now when you go and pop holes in that blanket you potentially expose new weed seeds that were dormant under the soil (and not in contact with the pre-M), and more importantly you now leave pockets in the lawn that weed seeds could enter from the air. Basically you're partially negating the purpose of the pre-M.

I think not doing a pre-M would be a very bad idea. Thin areas WITH poa already present (ie producing seed shortly or already) are just asking to be completely taken over.

Remember that compost IS a fertilizer (in a sense). While not a large dose of nitrogen like a chemical fertilizer, it does provide benefits to the soil through the biological organisms it houses (break down of thatch if present, better environment for the grass by reducing moisture loss, etc.). So no I would not fertilize until 5/12 to attempt to reduce the propagation of poa. But we're seriously talking 2 weeks here. Split the difference and do it next week (5th)!

As mentioned before seed is not for you so the idea of planting plugs (sprigs) is exactly what you should do, after you aerate the compacted areas, plant the plugs (look up the proper way to prep the ground for plugs), and then apply a thin layer of compost. Then keep those newly planted areas from drying out.