Just the get them something to look at and to show how prepared you are. 

Will an unsecured lease buyout cause any issues on my credit (other than the hard pull), as we are preparing for a home purchase within the year?

One basic question I have is this: How do I test my assumptions, particularly in terms of rent amounts? 

Should I mention anything about lease to own programs (such as home partners, dream america, or divvy) or should I get him in touch with a lender since they have a good bit of time to get prepared?

Walk the properties with your agent and they will likely be able to give you a "sniff" test of what the property requires.

How do you weather a storm you haven't had time to prepare for?

@Jason Hodges I have bought a 200+ and a 1000 unit deal using a DM strategy.DM is great, but prepared for the long game as it took me 2 years to buy each deal, but each deal has been a grand slam.Feel free to message me for some ideas.

Remember: Luck happens when preparation meets opportunity.

If you're seeing development that doesn't pass the sniff test then investigate further!

May I ask you if there is a source to find the *maybe* more expensive but reliable contractors who are prepared to be repaid as the job is done?