Traditionally, lenders dislike the down payment to be OPM, as that signals the buyer has no skin in the game and thus is a higher risk. 

I understand there are a thousand ways to "skin the cat", but I am looking for some feedback and guidance.

It's one step above being a property manager, who once again takes a 10% cut off the top, which is almost half of your monthly profit, with little risk or skin in the game.  

I am very thick skinned and I learn a lot through what sometimes looks like arguing.

That's why the returns always look so good on low priced properties, the increased risk that comes with more drama at that end of the market makes it attractive if you have a strong stomach, thick skin and like roller coasters...Certainly crunch the numbers on your prospect properties, but also overlay things like safety, quality of local schools and overall appearance of the neighborhood, (the things that responsible people care about).  

You don't take it personal or let it get under your skin, it's just part of what you do: renting to people who sometimes act up.

Eventually, I will succeed at my goals, yes I'll be irritated and a little frustrated but I'll get over that and continue moving forward.

The other guy would question every single expense like I was trying to skin and eat his kids...

for example i do the same research for my friend as i would for a bank like multiple estimates on the rehab comps for the area and how long on market how much skin i have in the game. also i offer weekly updates with pictures and a brief explanation of whats happening before pictures too help.  

would require you to have some "skin in the game", ie. a down payment.. also, they might charge points upfront..The biggest complaint I've seen (on BP at least) is that HM lenders won't 'approve' the house you're wanting to buy, and it ends up costing you an 'appraisal fee' or something..My biggest advice when looking for HM Lenders is DO YOUR HOMEWORK !!