Jose it can be done but you will need someone to navigate those waters as they contain pitfalls for the new guy.

They agreed as they too could still smell the smoke.I washed the fans had the place painted and the carpet cleaned washed down the wood doors and base boards to no avail all before the ozone.I found a product called Vamoose on Amazon for $35-40 that was a gallon container.

He thinks the tile might contain asbestos, and suggests we just rip up the last layer of linoleum, and relay linoleum over it.  

Damage due to the fire was contained to the two story wall where the fireplace was located, and was somewhat minimal considering the situation.

If you want to buy this deal you know going in that you might have legal issues to deal with early in your ownership of this property.Because you are dealing in a he said she said situation now the best way to cut down on any eviction or legal expenses is to get everyone's understanding of their position from them in writing.Require that the listing broker prepare an estoppel containing known facts, as they've been given to him by his client, have s/he get the seller to sign the estoppel, and require s/he submit the estoppel to each tenant for signature.Sometimes tenants won't cooperate and return a signed estoppel but the seller should and its on them to provide you full knowledge about the security deposit and the current status of each tenants rent. 

Does the house have central heat, or does each room have to contain its own heater?

The biggest issue is with the adhesive containing asbestos and the difficulty removing that.

Now I have not used what is offered below, but I did think about it and it could at least provide a cheaper DIY alternative to resnaking. https://www.amazon.com/ROOTX-Intrusion-Solution-Container-Funnel/dp/B00FPRQ3A4?

WITNESSETH: That Seller, in consideration of the payments, covenants, agreements and conditions herein contained which on the part of the Buyer are to be made, done and performed, has this day sold, upon the conditions hereinafter recited, to the Buyer the real property legally described as: SUBJECT PROPERTY: ________________________________________________________, hereinafter the property.

Let me see, I guess we need a new promissory note for some of you to use, so here it is, at least the part you need to modify.I (We) the undersigned as borrower(s) do promise to pay, subcet to the terms herein contained, to the Holder the principal sum of ____________________($_________) Dollars.....etc.Borrower agrees to make payments in the amount of ____________ beginning on the first day of ___________ and like date thereafter, based soley on the borrower(s) ability and desire to pay same, until the outstanding principal is fully paid or at such time as may be convient for borrower(s).In the event of default by borrower(s), the assignment of rents made in connection with this obligation shall only be payable at the option of the borrower(s).