This time is used not only to discuss and sign the rental agreement, but also to demonstrate the use of appliances, water/gas shut offs, orient the tenant to the property and orient them to our management style, etc.

Sorry, but your comment is ridiculous and demonstrates that you have no idea what you are talking about.Actually, with SFR you are much more likely to be able to attract better quality tenants than other types of housing.

But intent is also demonstrated by your actions.  

The latest survey has demonstrated that there is a sudden shoot up of the demand in those locations connected to RRR.

Tenant shall provide a certificate of insurance to Landlord demonstrating that Tenant has procured the required insurance coverage, within ten (10) days after the commencement of the Term of this Lease and within ten (10) days after any renewal or change in such insurance coverage.

But there could always be specific circumstances where a shorter (or longer) holding period would be justified.Some things that demonstrate intent are - actual holding period, past history, present business practice, unsolicited offer, extenuating circumstances, correspondence with your professionals.

I would readily agree to rent to prospective tenants with pets, as pet owners overall often demonstrate a level of responsibility and commitment to caring for their animals that indicates strong character. 

Is there a standard amount that we need to demonstrate is held in reserve for the duplex?

More than likely, if it goes to court, the report can be demonstrated that it is insignificant and not present long enough to cause health problems.If the tenants asked for a report, and they know that you did it, then they will ask for it.

To establish negligence on the part of an owner, the plaintiff in a civil suit shall demonstrate actual injury caused by the lead base substance.