He scammed a lot of people out of a lot up-front of money.

That cost me about $1,000 each time. 

There is extra costs, more regulation, and more liability. 

If I keep doing the same strategy, putting more money down upfront, I will generate more cashflow now but am delaying how quickly I can purchase houses. 

There are also additional costs of operating and maintaining an LLC, like separate bank accounts, annual report filings, tax filings, etc.2.

I got 800+ credit and great mortgage offers so only reason im doing this seller financing idea is that its lower monthly cost

They wanted a $10,000 fee upfront (before you get the loan) to do "due diligence". 

These are all upfront soft costs before you break ground. $300sqft to build at least.If you have any sort of mortgage on the property you will need an attorney to handle the mountain of paperwork the bank will give you for a lien release. 10k+, also probably some nightmare terms to have to build and sell immediately and god knows what.At this point a year has passed and you have spent at least $60,000 cash, you're about to break ground on a structure that will cost you at the very least $400,000 to build, you are still 1 year away from cashing out because you have to now build a house.

State up front you're a Coach in your post, then the obvious answer is yes from your perspective. 

I'm curious as to what cosmetic rehab you have to do that costs $27K?