I know typically with courthouse auctions it is a very quick turnaround (maybe 24 hours) from when your offer gets accepted to when the payment is due and you close so you will have to be comfortable with the added risk of not being able to do much due diligence, or will have to scramble to quickly verify you are buying a clean title and to produce the cash for purchase if you don't have it already liquid.

Things we learned: (1) going through numbers, layouts, quotes etc. is annoying but necessary… This project will be tough, but we have already saved ourselves about $1,200 by doing the clean out.

If that's the case, you can't do any renovations until you have it professionally deleaded or it would be flagged for Unauthorized Deleading and you can get fined and the property would never be able to get a Lead Certificate, only a letter of Environmental Protection that states you did illegal work, got caught, then had to pay a professional to clean up the mess.

We do charge an additional pet cleaning fee to deep clean the home after the stay.

We did some maintenance I terms and painted the basement walls and floors and professionally cleaned the house.

Flipper paints it grey, puts in clean cabinets new fake flooring what can go wrong? 

If the septic is covered by a slab of concrete, how will they ever clean it out? 

If that's the case, you can't do any renovations until you have it professionally deleaded or it would be flagged for Unautohrized Deleading and you can get fined and the property would never be able to get a Lead Certificate, only a letter of Environmental Protection that states you did illegal work, got caught, then had to pay a professional to clean up the mess.

I suggest you read the Bigger Pockets book written by David Greene "Long-Distance Real Estate Investing". 

I have a 750 credit score with a clean record.