Help with a decision of a beginner?

I'm starting a small bussiness that sells in close cities through Instagram, eventually I want to expand it. I'm in uni so I'll have few time in 3 months, because of studying and pursuing my hobbies. The thing is, I found a group of 4 people that can help me with that, with attention to clients, answering comments, marketing, delivering and so on. They are students that have the same goal as me. I'm thinking about it as the more people we have, the bigger and better the bussiness can be.I have 200 dollars to invest with a gain of 20%-50% (40-100 dollars) that I'll also invest. Thing is, they divide everything so my 200 dollars could also be reduced for investing to the bussiness.The decision is to do it with them while dividing and investing as a group (They have around 50 dollars to invest) or do it alone or with another friend. Also I'm worried I could not need their support if I make a page for selling, that is another question I have for experienced folks. Thank you very much. see hubwealthy.com/wealthy