Get your emergency fund, then pay off your debts. 

It may make much more sense for you to put the money into a diversified fund (i.e. syndication/crowdfunding).

Hello again BP membersI have recently discovered how to pick up not so bad REO SFR’s to flip and rent out (or flip and sale .. not my thing though) with basically using the brrrr methodMy question is more of which is better scenario to be inif to pay down my primary residence and then have (easy numbers) 100k available in HELOC moneyOr have 100k cash money laying thereAnd then after having such funds available (easy theoretical numbers)Go out and Find a REO SFR for 50k Needs 25k in repairsAppraises and ARV comes back at 100kAnd will rent out for 1400-1200 a monthCash out finance 75k (75% LTV)Pay back your self or helocAnd repeat process overNow my immediate goal is to reach 15k PASSIVE income but i want opinions on how to get there faster and with this idea i have seen a few examples of in older threads but not alotThanks in advance!

I understand it's for their retirement but it's not your job to fund them.

I have received a huge amount of interest and offers to fund, but before getting into specifics they either ghost or made an excuse to back away.

If your goal is to buy, hold and cash flow SFH's are there effective ways to use private lenders to fund your acquisitions?   

I've bought a few in the past and remember there was a cause specifically stating that.Why not just double close using transactional funding? 

Honestly, it's too bad that the operating part of your dad's business does not carry with it some residual value of some sort with regards to that commanding a sale price.My hunch would be that this would be far too risky to embark on as a first go of things.Especially, from what you're mentioning this may have a large impact on the quality of your dad's retirement.If you have the funds and can structure something, the place to start would be to engage with an A/E firm to get a cost estimate generated for a concept building like you're mentioning. 

Would they also fund for rehab cost.

I have a friend looking for an attorney to help with the legal aspects of raising investment funds for the acquisition of a building for a gym in the DFW area.