I have identified an apartment complex that will have slight + cash flow with conservative expense/revenue estimates and 100% financing. 

@Jason Chan, sounds like you are off to a good start identifying the areas that you want to invest.

My goal is to cast a wide net on identifying agents who investors have worked with and then slim the list down through interviews/research.

I think the first thing you need to do is narrow down your search by identifying exact what type of investment you are pursuing and then study the crap out of very specific sub markets.

So you would need a key person to maneuver and identify the opps and pitfalls.

I understand that I have to identify one or more properties to swap with a total value of the sale of my property: are we talking about the gross yield  (600K) or the net yield (570 after after the real estate fee)?

Memphis Investment Properties Turnkey Case StudyDisclaimer: I am an investor/customer of M.I.P, I do not work for them nor being compensated in anyway, just sharing my experiences with other investors.Providers Involved:Norada Real Estate InvestmentsMemphis Investment Properties (M.I.P)Reedy and Company Realtor, LLC – Real Estate Broker and Property Management for M.I.PBemortgage – LenderLipscomb – InsuranceThe Prep: I originally came across M.I.P through Norada (Marco Santarelli, BP contributor and has his own podcast).I was assigned an advisor who gathered my goals and situation and we worked together to identify two markets to look at Memphis TN, and Birmingham, AL.I’m am an out of state investor living in Colorado and have two other properties in Texas (not turnkey) and have been a BP member for some time.I attended an investor Tour in May in Memphis to check out the area.

You have already identified this in your original post. 

Does due diligence on the property need to be conducted before or after identifying the property within the 45 day window?

I place more weight on the desire for cash flow, but as I believe its more of a spectrum than an either/or, I'm trying to identify markets where there is at least a greater likelihood for appreciation as well.