If you delead, and maintain the standard, you will be in the clear.Here's the law (emphasis added by me):460.100: Duty of Owner(s) of Residential Premises (B) Whenever any residential premises containing dangerous levels of lead in paint, plaster or other accessible structural material undergoes a change of ownership and as a result a child younger than six years old will become or will continue to be a resident therein, the new owner shall have 90 days after becoming the owner to obtain a Letter of Full Compliance or a Letter of Interim Control, except that if a child younger than six years old who is lead poisoned resides therein, the owner shall not be eligible for interim control, unless the Director grants a waiver pursuant to 105 CMR 460.100(A)(3).

Learn how to reduce your risk while increasing your return with pet-friendly rentals and you'll have fewer scammers knocking on the door. 

If it's a large diameter well pit (brick or stone lined) you could have a dangerous situation.

You'll remove most of the K&T in the basement and upgrade to Romex.You're going to self-manage the buy-and-hold, and like me, you know a bit about the dangers of oul Pgh single-family.

Understanding sub 2s on the surface level now, what are some of the pitfalls or dangers of using this strategy versus traditional all-cash purchases from a seller?

PROPERTY & TENANT MANAGEMENT - I call it Tenant Management as a lot of time the tenants moving in smaller buildings stay longer in the properties, and these buildings are easy to self-manage as most units have separate utilities, so fewer bills and less tenant turnover4. 

Then, accelerate your success by going forward making fewer expensive mistakes and greater profits.

I have no reason to suspect that the macros are dangerous or compromised.

If you don't offer a buyer's agent a commission, you can expect a lot fewer showings. 

You can find properties at a better price, fewer competitors, and better buy-and-hold options.