(Causing them to sell their houses cheaper to get away from the never ending noise of the TV/stereo on all weekend, and until late at night in the outdoor room next door.)

Read the Rich Dad Poor Dad series (yes, all of them).

May be look into tax exempt securities such as municipal bonds or series EE. 

You might consider adding cable tv in the future.

I would guess most people have felt like giving up, or have been unsure of themselves at some point in their investing careers.Not sure if you have already listened to the podcast episode that came out today (I think), it sounds like it is very applicable to your challenge.Sometimes it seems like real estate is a series of problems that if you can somehow figure out how to solve you are rewarded with a cash prize.  

Looking for local lender in the market who can pull together 3 pre-approval letters in 1 day on a series of 3 4plexs.

They make designer series panels that look really elegant and classy

We are trying to set up an entity to buy-and-hold this property and I'm unsure if the best method for this is a Series LLC or a C corp.

And remember NO one is going to go without TV and Cell phone

I recommend a series LLC.