This means building a budget that includes setting aside funds for your next investment.

I've included an example below to help illustrate this.So different lenders have different rates (which do vary even for DSCR loans) but these are factors they all consider.See example below:DSCR < 1Principal + Interest = $1,700Taxes = $350, Insurance = $100, Association Dues = $50Total PITIA = $2200Rent = $2000DSCR = Rent/PITIA = 2000/2200 = 0.91Since the DSCR is 0.91, we know the expenses are greater than the income of the property.DSCR >1Principal + Interest = $1,500Taxes = $250, Insurance = $100, Association Dues = $25Total PITIA = $1875 Rent = $2300DSCR = Rent/PITIA = 2300/1875 = 1.23If a purchase, you also generally need reserves / savings to show you have 3-6 month payments of PITIA (principal / interest (mortgage payment), property taxes and insurance and HOA (if applicable).

Lenders will not send out an LE without a complete application (which includes a property address) because it's basically binding.

As @Jerryll Noorden said BE HONEST, full disclosure, INCLUDING that your a licensed agent. 

If they were looking out for my best interest and knew that they tenant was moving out, they could have taken that opportunity to show me the unit.I had been told that Ready REI’s "contractors" had gone through the duplex including the occupied unit and deemed it move in ready, however the home had MANY issues, and the unit that the tenant moved out of was a complete dump that required a ton of work – much more work than Ready REI let on.

But I have since found a better solution for my situation that does not include wholesaling the property.

Quote from @Stetson Oates: As a suggestion, when you refer to net cashflow, I would include maintenance, vacancy, and repairs. 

@Jonathan Bombaci recommend using that amount as a bargaining chip for lower rates.80% of evictions are wash, rinse, repeat. 

Between a 1031 Exchange, HELOCs, and a partnership, I'm up to 15 doors including my personal residence.

Here is the statement expanded to include formulas for doing one flip per year, two flips per year, five flips per year, and ten flips per year: One flip per year: If you start with $50,000 and do one flip per year, aiming for a 35 percent return, your progress would be: Year 1: $50,000 + (35% × $50,000) = $67,500 Year 2: $67,500 + (35% × $67,500) = $91,125 Year 3: $91,125 + (35% × $91,125) = $123,019Two flips per year: If you start with $50,000 and do two flips per year, aiming for a 35% return on each, your progress would be: Year 1: $50,000 + (0.7 × $50,000) = $85,000 Year 2: $85,000 + (0.7 × $85,000) = $144,500 Year 3: $144,500 + (0.7 × $144,500) = $245,650Five flips per year: If you start with $50,000 and do five flips per year, aiming for a 35% return on each, your progress would be: Year 1: $50,000 + (1.75 × $50,000) = $137,500 Year 2: $137,500 + (1.75 × $137,500) = $378,125 Year 3: $378,125 + (1.75 × $378,125) = $1,039,844Ten flips per year: If you start with $50,000 and do ten flips per year, aiming for a 35% return on each, your progress would be: Year 1: $50,000 + (3.5 × $50,000) = $225,000 Year 2: $225,000 + (3.5 × $225,000) = $787,500 Year 3: $787,500 + (3.5 × $787,500) = $2,756,250The key points remain the same, which is to aim for a high return through flipping, reinvest the profits to compound the gains, and be disciplined in order to build significant wealth over just a few years of this real estate investing strategy.