Hum, suspect that has been heard before unless your case is very compelling. If you have a job offer and medical support, that will definately help.
If you have to appeal against a no decision by PMA, if I were you, I would go around the flt cdr who appears out of his depth. As I do not know what sort of sqn you work in, I cannot give specific advice - do you have a WO or FS to speak to who may be able to speak sympathetically to the sqn cdr? At the moment, It sounds as though you have enough in place to support your first application but if you fail, be prepared to up the stakes - your local MP may be willing to write a letter too.
Ed