A good business plan should answer these questions, but at a minimum in your project you need to frame the following:

What is the market?
Who are your marketing/feed partners, if any?
What who is the competition?
What makes your brand more appealing (market traction)?
What are the costs to entry and the margins (can you endure a fare war?).

Finally, a hub is a by-product of legacy carriers need to consolidate feed through a much larger network. Unless you start with dozens of jets, why even consider a hub. Point-to-point seems like a logical solution for a smaller network.