Now, after doing this several times my success rate is around 1 out 5.   

In the "industry", you would use an "Acquisition/Rehab" loan that allows you to use part of the loan to apply to the purchase of the property and you'll have some loan funds left over to use for the rehab.

I'm eager to learn about how to find and fund properties that help my family financially and my community with affordable/reasonable dwellings for young families and newlyweds.

Any mixing of personal and LLC funds can compromise this liability protection, potentially making you personally liable for any claims or lawsuits.

@Steven Nguyen            Your first step is to liquidate some of your Crypto so you have liquid funds to contribute to the deal.

Interest rates are changing every day. 

But SFH are already seeing renewals at 2%-4% and release rates up at least 5% YoY...that number is even higher on some luxury ($3k+/m rent) homes as those are harder to find.The rest is entirely speculative.

I think about this often, its really just running the numbers - if you borrow 100k at an 8% interest rate, will the investment get you more than an 8% return?

It sounds like you are investigating the DSCR route due to lack of investment funds. 

If leveraging equity feels too risky, you might consider using a portion of the equity to fund your next property while keeping reserves intact.