If you are unsure how/who to do that, or how to word your due diligence contingency terms  (as well as that "ability to secure financing" clause), then your Offer would best be served as an understanding in principle - awaiting confirmation from your RE Attorney.

So any responses you receive here will never be a true apples-to-apples comparison.I will admit, this advice is a little self-serving since I am a CPA myself.

My profession is physical therapy and although it has served me adequately these past 15 years,  I am tired of working for large corporations.

It was so clogged, the opening was the size of a quarter!  

As for financing you might look at HUD FHA multifamily loans if the loan size is large enough.

This person says their leaking toilet used 90,000 gallons in 4 weeks(similar to your size spike).https://answers.yahoo.com/question/index?

Oops i missed that, depending on the size of the rehab. still looks like good deal, and I hope your market is strong for a quick sale.

What size property,1-8 units or 8 and more?

My reasoning: Larger Body Types = More wear and tear on the property.It looks like this has already been discussed, without resolution,  on bigger pockets: https://www.biggerpockets.com/forums/52/topics/187...The overriding theme seems to be to not discriminate based on size.  

In terms of size wise I don't think  going over anything past 10 unit buildings for at least the first few years to get that good track record as well to make sure that i have enough reserve money to handle any repairs that come up because i know they have the tendency to do so even when you reduce the chances.