Here is a link to the FNMA guidebook.

-Please share a link and/or pricing to check them out!

can't view the link you posted.

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.

Google Drive is extremely helpful and links are easy to share.

Feel free to message me for more detail on cards or referral links.

It seems I would need to submit around 100 offers just to achieve a potential engagement of 2% to 5%, with no guarantee of closing any deals.Thank you for your response, I definitely appreciate it.

I think going in to the deal guaranteeing 80% is a bit of a bold step, but it really depends on the address and the neighborhood characteristics. 

Since the account is linked to your mortgage, overspending can increase mortgage balances instead of paying them down.

Let me know if you need more information or a referral link for skip tracing.