If you are concerned about receiving damaged goods, then cover yourself with insurance, it's a smart move to do so if importing breakables.
As theyeshaveit said, use the paypal escrow service to cover yourself, and you should be safe from a money point of view.
Sounds like you are already aware that you will be buying fakes, so as long as you are aware of the penalties for selling them, I would suggest you have your bases covered as well as you can.
Just remember that when dealing with DH gate, you are dealing with independent businesses listed within the site, and certain quality issues may arise when doing business with more than one supplier.
Good luck with the investment!