I was told I need to get a good understanding of these subjects:  1) Taxes, 2) Legal issues in ABNB, 3) Negotiations, 4) Short Term Rentals & 5) Tenant/Rental Agreements.

As long as you specify the bank name, address, and interest rate in the lease, you're meeting the legal requirements.To avoid the hassle of having to have the tenant sign the lease twice, you can simply leave the account number blank in the lease and note that the deposit will be held in a specific account at a designated bank.

He didn't have much downside in terms of potential losses, and I could be somewhat passive and protected legally (he owned the building site etc. and took care of liability). 

You assume the owner occupant term is not enforceable...what are the legal grounds for that?

Interest rate on both vehicles would have to be {near} identical or the amortized, fixed rate note would need to be at a higher rate than the LoC.In my above post I mentioned the "borrowed lump-sum" approach being necessary if the terms of your mortgage note were such that it could only be prepaid on its anniversary {don't know if such notes still exist}.  

Expanding my network is a priority, not only to find new opportunities but also to eventually be in a position to provide those opportunities to others.I know that scaling a business requires collaboration with others who can bring expertise in areas like financing strategies, legal structuring, and scaling operations.

Visa and FinancingYou're correct that securing a mortgage might be challenging without legal status or a W2 job.

I have an appointment with a land attorney late this week and now will be getting a significant legal bill out of all this as it will turn into much more than the cost of a consultation.

Wisconsin Legal Blank  Before the next rental period meaning i would request one sent by current seller via amendment 

Technically, those sleeping over 12 built after 2016 are putting themselves in a legally liable situation if something happens as insurance companies may not cover them.