Best to call city hall for the town you are buying in to see what if any rent control rules are in place. see link below if you require additional information and call the Jersey City Landlord Tenant relations office. https://www.jerseycitynj.gov/cityhall/HousingAndDevelopment/...Jersey City CPI chart on recommended rent increases: https://cdnsm5-hosted.civiclive.com/UserFiles/Servers/Server...The state with the highest eviction rate in the country right now is South Carolina. 

I would recommend them. 

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

I use trezor hardware wallet I highly recommend it. 

If anyone has a good starter spreadsheet or knows of a reliable website for deal analysis, I’d greatly appreciate your recommendations!

Any recommendation for the first steps I should take if I want to purchase my first rental property using the BRRRR method (or flipping).

I would recommend to partner up with an experienced investor to really solidify your numbers.

May I recommend that you find a local businessman/dentist/doctor to fund your flips?

In other words, I already have a checking and savings with BoA, but I would create a 2nd savings account (within my regular account) and put all the rental properties last months and security into that account (combined).Is this the correct way to prevent co-mingling of funds, or what would you recommend?

I use National Tenant Network to run a tenant score and recommendation.