I've found some turnkey SFRs with market rents that appear to be more than enough to service all expenses, based on the finance amount.

Where are you based and what markets are you looking into?

Here is a rating/classification system that I have come up with over time based on the overall Livability score80 and above A+78/79 A76/77 A-74/75 B+72/73 B70/71 B-68/69 C+66/67 C64/65 C-60/63 D59 and below FCheers and let me know if I can help in the future!

Given your experience and strong financials, you have some solid options:Commercial or Portfolio Loan: These are tailored for investors and can help you avoid personal guarantees, especially since you have an LLC.BRRRR Loan (Buy, Rehab, Rent, Refinance, Repeat): Some lenders offer BRRRR-specific loans with funding for purchase and rehab, allowing you to refinance based on the new ARV once stabilized.HELOC or Cash-Out Refi on Current Rentals: Tap into the equity on your single-family rentals to secure funding for the 4-plex purchase and rehab without high origination fees.Each has pros depending on your cash flow goals and timeline.

Following - I'm also based in California 

It will be best to choose one and run with it for a bit so you have a base of comparison for the future - keycheck is a solid start.

I would greatly appreciate any insights or recommendations based on your experiences with similar tools.Thank you in advance for your valuable input!

Do you have a base of knowledge that can be useful?

Bought my fist property in 2022,PITI + HOA at the time was 2200, based the market and renovations i believed i could get 2400-2500 for the property, which i did get 2500 the first year.

They also need to report the sale value for the state as well because in many/most places there are state/local taxes on the sale based on the sale price.