Never, Never use your sellers property tax expenses to estimate your future property tax, this is a big mistake done my many people in the industry.If you haven’t sell your Main home where you are living yet you might consider to keep it, because your new home would be triple the amount your are paying right now.

Present it to them as a return on their money deal - “I’ll pay you 8% on your money while I’m borrowing it”  or whatever, and  pay them out of the cash flow on the deal until you can qualify for a refi into your name when you would pay them off.  

For example, I can give you a deed to a property for $1 and NOT pay off the mortgage.

Their "Titanium Service" does NOT mean anything, other than they would ask you to pay $10K to sign up for it.

Why should an investor pay attention to your data or trust your analysis? 

Zillow says it may go for $289k +/-My current tenants are using it for business and pay $2,250 a month.

If it was useable before (small ding) and is now destroyed, I'd take her up on her offer, but I'd also pay some of the costs as it wasn't new when she moved in. 

Section 8 rent payment standards has the city willing to pay up to $3,120 per 3 br unit so I used gross rent of $6,240 given rent for the furnished 2/1 unit would be too variable with partners living there as they please.Phila.gov info:https://property.phila.gov/?

As for 'everything must be done through the LLC' - your property insurance must be covering the LLC (not you personally), your bank accounts that you receive rent and pay bills out of must be in the name of the LLC, your utilities must all be in the LLC name and not your own, etc.

Getting in early (like before February 15th for personals  and in January for business returns) seems to be the secret the best I can tell.You get an automatic 4 month extension - but if you did not pay all the taxes owed (within 10% of what you owed by the filing deadline) you  will incur a penalty for that… and if they aren’t filed by the extension date that would be another one as well.