I'd also find out from the PM how much the deposit is and make sure that gets applied to the rent.

It either is not an opportunity or if it is an opportunity it likely is not for a first time wholesaler.Now to your question, you seem to have applied the 70% rule correctly. 

If the current plan is to open an LLC to apply for a commercial mortgage loan, how is this possible with a newly created company?

Businesses in that area are making changes, for instance some of the Starbucks in PF shorted there hours because no one even applies for the jobs they have open.  

They took occupancy immediately after the previous owners the day after the walk through as they were acquainted with them and applied to my management company.

Ideally I'd like to see the tenant’s rental application, credit report, background check, all other screening measures the seller took when the tenants first applied, rental payment history, as well as current lease.

I do think you already signed disclosures stating you have no intent to apply for more credit, etc.

Rental houses and business property is assessed at 20% of its tax appraised value.If already assessed at 20% of its tax appraised value, then simply substitute your purchase price for the tax appraised value and use the same percentage to figure out what your taxes will be.If assessed at 10% of its tax appraised value, then double the current percentage of taxes to assessed value and apply it to your purchase price. 

A question for those with experience house hacking a multi-family house:What was the most financially-intelligent way to utilize your tenant's rent to apply it towards your own mortgage payments?

I’ve learned much of what I know from BP and found that instantly applying the take aways from here is how you’ll one day find yourself as a successful investor in RE.