- Is it normal for the seller to specify the buyer's agent commission?

With this new reality it is imperative that buyers are aware of these expenses prior to submitting offers on homes; they should also be aware of the risk that these costs can appreciate aggressively.https://www.nbcnews.com/news/amp/rcna163853

Is there anything else from seasoned note buyers that I might need to consider before attempting to work a deal? 

Think about where you can be in the path of buyers, sellers, and investors.

Or buying a property in a seller's market, and then buying another one a few years later in a buyer's market.

The tenant fails to pay their last month's rent and leaves the place needing new flooring and paint.

I live in Phx,Az , where should i apply for a mortgage loan first at my local bank (wells fargo) or use a broker, a lot of people here tell me to start with my bank as they have all my info, if i get pre approved anyw...

I've had many clients come to me to legalize prior work which comes at a costs to the buyer/new owner.  

Most importantly having the 5 separate  tax ID’s will give you the flexibility to sell the units individually in the future or perhaps it becomes a potential exit strategy you pass along to the next buyer.

This helps you, as the buyer, understand the health of the asset.Where in the post does it say anything about what a seller makes?