I also want the business to be long-term and sustainable.
You should atleast say on what kind of business you would build up with the use of MLM? Its really hard to tell that it would be long term and sustainable because it will vary on the products you would tend to sell out.
I tried to visit that eleven-dollars site it do shows needing 6 referrals before you would able to pay out.This isnt sustainable for long term but well sorry for some words about it.
Good luck on finding some developer/programmer.