In addition, locate the other wholesalers in town so you're getting deals from as many sources as possible.

You could offer to repair the property for an additional cost, this has worked several times for me.

In addition the bank could take forever to get an acceptance and the interest rates might have changed by then affecting the price you can pay etc.It helps waiting sometimes if market value is rising and you have a set price but if the market is going flat and interest rates rise or market prices go down it can be a negative.No legal advice. 

But finding GOOD lease option buyers to assign to is a much more difficult task, because the reality is that 70% of people who call me on my ads are not a good fit, and likely wouldn't be able to actually exercise their "first right of purchase" on the home after I assign to them before the expiration date.

The county said 2-4 units were no problem but 6 would require additional approvals.

He keeps the signed deed in a vault in his office until the option is exercised, then he records it with the clerk.

Good luckEDIT: In addition to all of that, make sure it's still a good deal for you in the end.

If you don't want to borrow anything additional, you would be doing a rate and term refinance.  

In addition there are elderly people in need of assistance by way of assisted living.Is it possible to approach a land developer (apartment or assisted living/health care) about entering into a 100 lease agreement whereby I make the land available under a lease but they develop the property, manage it, and maintain the operation?  

You also may want to look at a site called houseflippingworksheet.com for additional help on how estimate costs of rehab.