If you're going the live in flip route - one great option would be to go with a low money down owner occupied loan to fund your next purchase.

Will the title company put this property under our LLC name, and won’t be required to legally inform HUD/tax authorities. - will it influence property taxes once we move to conventional loan in 3 yrs? 

Purchase price: $45,000 Sale price: $175,000 I lived here for a few years then when I was married it became a rental.

I would like to learn more about seller financing, I see a lot of information on the internet about seller financing but honestly I am just confused.

That's how you gain the information you need to AVOID MISTAKES. 

Did you investigate the history of heating costs before purchase?

You have not documented these incidents, nor have YOU informed your tenant this behavior is unacceptable.  

Purchase price: $250,000 Cash invested: $52,000 2013 Built in a Class B neighborhood of Houston.

Sadly, I might have to wait until early 2025 for #5, as my funds have dwindled from purchasing 1-4.

Meet with a local banker & schedule a time to talk with a mortgage broker, they'll give you at least a baseline of what kind of down payment options and rates are out there.After that, if you're still wanting to research more creative options, do some looking into seller financing (a very hot topic with good, and bad, advice out there), look into private lenders, and commercial financing options.If you're wanting to live in 1/4 of your quadplex, then conventional residential loans may in fact be your best option as you can purchase that with a fannie/freddy loan with very low down, and use up to 75% of the income from the property toward your own income.