Is it better in any way to deal with a wholesaler who does not use such channels?

Once you start building a large portfolio of properties, it really does start to feed on itself and grow quickly. 

Water line feeding a fixture in the house?

For podcasts I really like the Huse Hacking episodes on Bigger Pockets Podcast and other channels.

Keep in mind these are all old house knob and tube, and plaster walls and Ceilings  and we all know that once you start cutting holes or Channels for the Electrican, plaster is a nightmare to deal with and piece back together. 

It can get messy if they go through both channels in the future.

I need more please feed me more advice.  

Yeah I know, 2 fast food joints it’s crazy, but however I feed my family that’s what I do.

There are just too many people out there with straight cash (or close to it) once a piece of property hits the conventional channels (MLS, craigslist, zillow, etc.).  

I also thought that I will have to develop a relationship with an agent who will send me deals (I know that the best deals go by fast as the top agent sharks feed the best deals first to their top clients who have bought Manhattan property and probably have portfolios)  The question I have now is what is the right strategy to approach the Manhattan market scene.