I will also mention that their initial terms are a 5 year ballon with the first 2 years being I/O. 

We finance initially with Hard Money.

If you withhold significant info from the Appraiser which will impact the Appraisal, then the Appraiser is justified in asking for a fee increase to redo the research.If you mean first contact as in during the initial phone call, then you are incorrect that he MUST get it at that time.

While Fair Housing Act of 1988 is the overall law that governs housing discrimination based on health conditions, the law doesn't go into great detail on how those health conditions should be interpreted and applied, and often references back to the ADA for several things, including determining if an animal is actually a service animal in the first place.https://www.hud.gov/sites/dfiles/PA/documents/HUDAsstAnimalN...QUOTE:  "Because HUD interprets the FHA to require access for individuals who use service animals, housing providers should initially follow the analysis that DOJ has determined is used for assessing whether an animal is a service animal under the ADA."

I'm      particularly interested in exploring the BRRRR strategy, despite the initially lower monthly cash flow.Long-Term Goal:- The ultimate objective is to achieve a monthly income of $15K+ through real estate investing within the next 10~15 years.I greatly appreciate any guidance, tips, or perspectives you can share based on your experience.

You could buy a multifamily, fix it up, rent out units while living in one, then refinance to pull out your initial investment and repeat the process.Additionally, deep-diving into specific areas within your target markets will help you identify properties with higher rental potential for your mid-term strategy.And regarding owner-occupying your first multifamily, this could be an interesting option depending on your financial goals and risk tolerance.

It can be appealing due to its low initial costs and inventory management simplicity.

If is still looked like a decent deal my initial offer would be quite a bit lower to start and slow to come up. 

The 6.875% 7/1 ARM offers a lower initial interest rate, potentially saving you money on monthly payments for the first seven years, but after that, the interest rate can adjust annually based on market factors.

While I understand leveraging debt could yield higher returns over time, for these initial transactions, I prefer the security of buying outright.