My question is, what's the best way to go about acquiring the property.

I work in the Kansas City Metro area with investors acquiring properties for them and one thing I have noticed is that the seller is always charging more than what these fixes actually cost.

My condolences for how you acquired the new property.

It seems that the greatest factor in the quality of the deal is not the cost to acquire the property but the rent on the units. 

This is the only way you will truly be prepared before you acquire your first investment.

The repayment terms for a 401k participant loan are equal monthly/quarterly payments of principal and interest (typically prime plus 1%) over a 5 year term (longer if used to acquire your principal residence).Please note that if you take a full $50,000 and then pay back the loan, you can't take another $50,000 until 12 months after the first loan was fully paid back.Per the loan offset rules that went into effect with the 2018 Tax and Job Act: if you leave your job and the loan is current at the time you leave your job but then the loan goes into default because you left your job, you will have until your tax return deadline (including any timely filed extension) to make the loan current by depositing the outstanding balance into an IRA (and thereby avoid the taxes and penalties that would otherwise apply).Please keep in mind the multiple loan rules:Under those rules, the sum of the balances of a participant's outstanding 401k loans under a single 401k plan (using the highest outstanding balance of each loan over the last 12 months) can't exceed 50% or $50,000 whichever is less.

Lately as I have had enough cash and don’t see myself acquiring another property in the near future, I’ve been increasing my 401(k) contributions.

There are times to use the FHA loan, even if you have low cash flow, if you are acquiring in a good area where you want to live.

I am hoping some note investors might be able to share some insight as to how they might value a performing note and what they would offer to acquire it.Stats: $650,000 - Property Value$458,000 - Property Purchase Price$418,235 - Original Loan Balance$391,941 - Unpaid Loan Balance376 months - Term remaining (420 months starting term - note has never been delinquent or in default)4.042% - Interest Rate$1,862.88 - monthly paymentAny advice on how to look at the deal would be great as I am primarily a multifamily investor and not as familiar regarding the nuances of note investing. 

I will acquire a home warranty and if I need anything additional, I will call brother again and he has a host of connections if needed.