Obviously you have money coming in but the ability to get most or all of your money out of a deal will allow you to scale quickly use that money and your 75k each month to do a couple at a time.

Pay off some or all of the debt and look for another owner occupied house (not the one where your mom lives).  

If I was paying for water I would definitely replace the washer with High efficiency and if a washer dryer is in the main living area it should look decent or all they will remember is the dated appliance.

Or all.

So far, the programs I have found do an inadequate job with monthly compounding.

(a) “Broker” means a person who, for another, and for a compensation or valuable consideration directly or indirectly paid or promised, expressly or impliedly, or with an intent to collect or receive a compensation or valuable consideration therefor, appraises, auctions, sells, exchanges, buys, rents, or offers, attempts or agrees to appraise, auction, or negotiate the sale, exchange, purchase, or rental of business enterprises or business opportunities or any real property or any interest in or concerning the same, including mineral rights or leases, or who advertises or holds out to the public by any oral or printed solicitation or representation that she or he is engaged in the business of appraising, auctioning, buying, selling, exchanging, leasing, or renting business enterprises or business opportunities or real property of others or interests therein, including mineral rights, or who takes any part in the procuring of sellers, purchasers, lessors, or lessees of business enterprises or business opportunities or the real property of another, or leases, or interest therein, including mineral rights, or who directs or assists in the procuring of prospects or in the negotiation or closing of any transaction which does, or is calculated to, result in a sale, exchange, or leasing thereof, and who receives, expects, or is promised any compensation or valuable consideration, directly or indirectly therefor; and all persons who advertise rental property information or lists.

and then do a little at a time or all at once?

I want to see 2017 to be the best and brightest year or all involved! 

While oral contracts can be binding, there is a statute of frauds that requires contracts of more than 1 year to be in writing. 

The others have some great advice as far as moisture remediation for the future and I'd follow most or all of that.It's not clear to me that this is actually mold.