My current job allows me to frequent travel which means there are many potential areas to invest in.

But the weird thing is no body knows who pays taxes, even on record the seller said; "yeah I was confused about that for the past 10-15 years"

I invest in Arizona where ownership records are public and quite easy to access. 

Have title company to record mortgage and sign mortgage note during that time. 

Banks and private lenders are going to be justifiably cautious to lend that much to someone without experience or a track record. 

A written lease should contain a "both parties agree that any/all other or previous or outside agreements are void" clause, that you could then show to a judge if the tenant pulls out an audio recording of a rent to own agreement with the previous owner (gotta be a bit paranoid when it's a $500k asset on the line).

I travel fly into a ton of cities every other week and picked up a tip from an Anthony Chara workshop awhile back. 

The recorded liens against the property look to be valued at about 400K.The final judgement of foreclosure is close to 500K.From what I've learned on this site, it’s my understanding that when an IRS lien is put onto a property, that IRS lien becomes the primary lien and the mortgage holder/bank becomes the secondary lien.

With a HELOC, the historical first mortgage stays in place, and a second mortgage is recorded to the property. 

Do a inspection, record the condition and if there is damage go after her.Since you are having her sign a new lease I assume she is now on M2M.