Hi BiggerPockets Community!

I've been a long-time listener and reader, and I'm excited to post for the first time in this forum and share that I've officially pulled the trigger and created my first LLC! Now that this step is completed and I've put together my core team, my next big milestone is purchasing my first property which I want to ideally do within the next two months.

As I'm looking to get my first rental, I want to make sure I establish a solid foundation for my business. I’m looking for your recommendations for the following:

1. Business Checking/Savings Accounts: Is there a clear winner for REI? I prioritize a strong tech platform and UI over a physical branch. Since I'm planning to utilize the PadSplit model, I’m expecting a high volume of transactions with multiple tenants, so I need an account with no "per-transaction" fees. A  high-yield savings for reserves would be a nice to have. Integration with QuickBooks (or other REI-specific tools) would also be ideal since I think these could come handy in the future as my business matures. I'm currently looking at options and am open to any recommendations.

2. Business Credit Card: I'm planning to acquire a fixer-upper and want to leverage a 0% intro APR business card (like the Chase Ink series) for the renovation. This is not required but since I'm applying to a business credit card, I want to make sure I get value out of any bonus offerings out there. For the 0% intro APR card approach, I realized that despite my 800 personal credit score, the brand-new LLC with no revenue history might only net me a ~$25K limit which would likely be insufficient to fund a rehab (most likely $50K–$100K). Considering this, should I disregard the "0% APR card" strategy entirely and look at other alternatives? Or are there mechanisms to secure a higher limit on a first business card?

3. The "REI App" Stack: While my property manager will handle most daily operations and provide a monthly report with the rental's expenses, I want to stay efficient and "dialed in" as an owner. Are there specific desktop or mobile apps you suggest for tracking portfolio performance, analyzing deals, or managing the "owner's view" of a rental?

I'll be honest—I'm still very much in the "learning phase" when it comes to the technical side of property management and REI tech. I am eager to hear from anyone running rentals—whether it's PadSplits, LTRs, or STRs.

How does your "financial tech stack" look like?

Humbly looking for any wisdom you can share!

Thanks!

Octavio