The guy has ambition and wants to play in the airline game, for which nobody can fault him. Many ppruners would give their right arm to head up and airline so, on that score, fair play to the youngster.
I'm afraid that's where the praise stops. Probably through no fault of his own, other than being naieve about what it takes to set up an airline, he has found himself with a monster on his hands - high levels of self-inflicted publicity, non-delivery and therefore scepticism and ridicule.
Nobody would expect a 19 year old kid to know what is involved in getting an airline up and running (there is no "Observers Book of Setting Up Your Own Airline" or Ladybird "Making Airlines 1-2-3") so somebody/organisation must be behind him, assisting and pointing him in the "right" direction by advising on what needs to be done to get an airline up and running. There are no problems with the ideas and route plans (although I doubt a J31 has the necessary performance for a full load at SOU on a warm day) - properly structured, marketed and operated, IOM to EDI and SOU will work (and have worked before). The will to operate on these routes is fine and viable (the easy part of being an airline), doing it legally within the regulatory requirements is more complex and therefore unthinkable for a novice to direct on his own without major assistance from an established airline or experienced airline people.
Issues which delay start up dates don't just appear at the last minute unless they have overlooked them - if they have no crew, then that is bad planning. If they have no call centre, again bad planning. However, if "paperwork" or "approvals" have caused the delay, that is questionable advice from someone who should have known what is needed to get it running.
First, find a good consultant or ex-airline manager to provide the experience needed - there are many ex-airline old guys out there whould woul dlove to dabble in this. Then find a reputable airline willing to wet lease an aircraft and crew on a flight hour basis and look after all the operating issues. Paint the aircraft in your colours. Forget about AOC's, post holding positions, CAA approvals, recruitment, training etc. That's for the future. Call yourself a ticket provider and get a cheap web-only booking system. Give yourself at least a month's selling before your first flight but make sure that first flight happens and that everyone booking with you knows that it will. Get out of the limelight while plans are built and confirmed. Build confidence based on real deliverable plans, rather than just gaining publicity because you're a 19 year old with a dream. Good luck.