It is easy for people to download fake W2s, ESA paperwork, etc, with a few mouse clicks and a credit card. 

The homeowner collects a NET/NET 5% yield with 1% increases each year in long-term lease by a BBB+ credit rated tenant (similar to Morgan Stanley credit).

We also run numbers to avoid lost money on blindly paying for an appraisal to find out its a dead deal or of no benefit.

The mortgage would stay under the seller's name.The buyer could then rent out the unit, renovate, etc. to increase cash flow or make more money.But aside from a possible "due on clause" being called by the mortgage company, what's the benefit to the seller?

As both an investor and a mortgage broker who has personally used both options, I can say there are benefits to each.It ultimately comes down to comparing the two side by side based on your specific situation.

So my question is, if you were in my shoes, where would you start if you had $150 cash with good credit?

A line of credit won’t commit you to a monthly payment unless you use the money, so you can avoid paying interest when it’s not in use.

Yes, your rate will change but not much if you have good credit it will go up around 5.875% to 6%.

Credit?

It has almost zero benefit to have it to just represent yourself.