So, a 10% down scenario will be about 0.75%-1% higher in rate, purely based on those price hits. 

The main house is also rented, and that is currently at a negative cash flow, so when it's all said and done pure cash flow should be closer to $900/mo.

So that last 5 lots will be pure profit.

Was that purely rate or fee related as well?

Sorry you and your g&g are facing this.From a purely financial perspective, you are not responsible for these medical costs of course. 

Generally, with the exception of pure luck, purchasing no less than a 4-unit property will out-produce a single-family for profit every time because when you increase the rents for a 4-unit property every year by only $40 per unit you automatically increase the value of the property in accordance with the 'Rule of Thumb Gross Multiplier' by $28,800 every year as in this math $40 x 4 x 12 x 15 = $28,800 increase value every year and in 10 years you profit $288,000 plus all your regular cashflow and your total profit could possibly exceed $320,000 to $340,000.I always see 4-unit properties for about the same price as a single-family home. 

Being all heart with no mind leads to making purely emotional decisions that aren't thought out, while being all mind with no heart takes away what it means to be human.

Every dollar I make after my break-even point will be pure profit.

If you are interested in pure cash flow - a Short term rental is way better than a traditional long term rental for cash flow -But is can be more work, and can be in higher priced areas too.  

@Manny Garcia just from a pure numbers standpoint 10.2% is a nice return.