All of the normal methods don't seem to produce much return for my dad, and even if he got 100% of the cash flow it would take 7+ years for me to see any profit.

Ideally, he would put up the money for the purchase and rehab costs, I’d run the project and then pay him back plus profit after selling it.

@Alex Price, sure my investing goal right now is simply to maximize cashflow and reach financial independence.

Then I would use that lot to build 4 homes as this business undertaking and hope to have the cost of lots be part of my investment, meaning when one day I sell those new homes, I will subtract lots and cost of building from my sales, so to reduce my eventual tax on the profits.

If you make the payments out of your money, you are simply moving your cash to another location...and burying it. 

My name is Jonita Ovalles-Pecjo (hyphenated with my biological father's name who died a few weeks before I was born and my step-dad that raised me until I was 15), but most know me simply as Jae.

I simply recommend writing a nice, sincere, non-threatening letter and getting it out to the homes in your market you feel would be a fit for wholesaling. 

@Roy N. certainly has a point around commercial properties and it's something most investors get to at some point (either the property is commercial or you have your residential properties, wrapped up as a commercial portfolio loan) as you simply can't keep qualifying personally.Another option is going with a lender which is able to qualify the self-employed.

You can do that but every dollar you take in cash or purchase less than what you sell is interpreted by the IRS as taking profit. 

For flipping sometimes it works in high price neighborhoods and the profits are much better with lower risk.