On top of an already steep monthly (that does include cable, internet, snow removal, amenities) it definitely makes me re-think my strategy! 

You will need to search the internet.

Remember, this was a long time before we had use of the internet or anything else we think of as “technology” today1.

We have programs that we readily pay your; grocery bill, rent, cell phone, internet, spending money, health insurance, Rx coverage, day care AND to boot not only do you NOT have to pay diddly-squat in income tax's that the rest of us subsidize (pay) for you but we even send you a big fat check each year if you have kids. 

Depending on the facts and circumstances of the agreement, it could either be treated either1) the sale occurs as of the original agreement date, and then your taxable gain is generally spread out over the life of the principal payments as an installment sale (although I should mention any depreciation you've taken on your property could affect this), or2) the sale does not occur until the lease option is exercised, and gain reported at that time.

Some mentees will act as a bloodhound for the mentor, knocking on doors, driving for dollars, scouring the internet, making cold calls, or performing other services that help the mentor find new deals.

How do you keep track of insurances expirations, taxes dates, equity growth per house, rental growth in your area ? 

and think about the advantage you would have over the other Allan Kapoors wanting to do everything from Internet if you're building relationships and developing expertise in person.and no, those numbers don't seem safe / conservative enough. 

He started to ask us about our financials and when he had asked us are we willing to invest money he made it seem like he wanted to do it at a later date.

I further believe (though would not underwrite to this) that this approach would offer the buyer the potential opportunity at a future date to conceivably subdivide the parcel and sell the main unit and ADU as separate properties.