After looking at the video, it seems you're looking for a fourth partner for your startup idea, who will proceed to implement the system.
The thing is, no offense, that fourth person will the one doing almost everything. Because as far as I can tell, there don't seem to be any really new ideas in the project - perhaps only the way they're put together. So what's really needed is a very well-executed implementation of it.
As for the original questions, and assuming you mean to have a full working product and not just a proof-of-concept:
- One person is not enough. You need a team of several people working many months, at least if you want to do this properly.
- No, students can't really develop this - only perhaps if they are part of a team with more experienced people. The problem with a student, no matter how skilled he/she is, is that he won't have any real-world experience with handling any sort of situation where things go wrong. And when you're building web applications in particular, well, everything can and will go wrong. There are other sections of the project where you can use students
- I very much doubt you can do this in 5 months. Perhaps with a large enough team.
- The skillset you're asking for is actually several people with not all of them being developers
---- Web developer / software engineer (several, at least one of which should be handling integration alone)
---- A systems analyst and project manager if you foresee many details beyond what's in the video
---- System administrator (more than one depending on how many people you expect to serve and/or having to manage many different servers and pieces of software)
---- User experience and graphic designer (probably more than one)
---- QA lead
There is a fixed amount of intelligence on the planet, and the population keeps growing :(