It is possible to get 90% of your purchase price and 100% rehab funded as a first timer in 1-4 units.  

I then found 3 properties from wholesalers in areas that I invest in regularly and purchased the properties with a hard money loan.

The ONLY reasonable deals are:Appliances when purchased if you have a retailer that offers unlimited repairs/replacement for 5 years for 10% of price.

Are they going to be able to buy your proudly done flip.3) If you misjudge the market, do you know when to dump it.4) Can you put a spreadsheet together on your purchase costs, carrying costs, rehab costs, closing costs, selling costs, tax costs, contractors that don't show and delay your project etc. etc. etc.5) Is the return worth the risk.

Is this for a primary purchase or build to rent/sell?

We've never used percentage-based criteria, like the 70% Rule, for purchases.

Step 1: Get preapproved for an FHA loan for the purchase price you are looking for.Step 2: Connect with builders until you find a few that will finance the construction of your home. 

Purchase price: $205,000 Cash invested: $60,000 This was the first property I purchased.

My goal is to purchase 15 units in the next 5 years, and produce a cash flow of $20k per month within the next 10 years.  

This sounds like a home run and a great first purchase!!