My understanding is that GENERALLY (I think there are other situations) I am only allowed to deduct interest if the proceeds are used to make improvements on the original property and cannot deduct the entire amount until the improvement are actually made.  

Yep, sold out of all kinds of masks at the home improvement stores here too.

Be very careful with improvements. 

How can I improve?

Only cosmetic work and improved distribution, good proffits. 

How can I improve my situation?

As we are looking at ways to improve our efficiencies and decrease vacancies, the topic of self scheduled showings is on the table.

My recommendation is to continue to improve your credit score so that you have enough buffer in place to continue getting the best interest rates. 

I now know to never spend a dollar on ads that I can't track and improve the results of...

They're probably offering to sign a 5 year lease, because they want to lock in their rent before the improvement is made.As said above, there's really nothing preventing tenants from just breaking leases, beyond their own sense of morality.