PART NO.1 MUST
PART NO.2 TESTING
PART NO.3 ONGOING
One last suggestion, you may could hire me as full time working for you at the very beginning. We will not charge you against different service. We could be your China marketing entry advisor. And provide you with one-stop service. We could provide all above service including part no.1 , part no.3 and item 1&3 in part No.2 without commission fee under monthly service.
After your business set up done, then you could think about to invest more in future, more stuff, more marketing/advertising.