I just thought I'd add my two cents, which i think you won't like.
The idea and structure of GFD is really good, and actually, with a good adapted script, would make a great film. I would not be surprised if you got backing from established producers, if you weren't so closeted.
Sorry com, but it's true, your killing your potential by hiding your sexuality, plenty of people in media are openly gay, it's never effected them, especiallly now-a-days, or is Britain so different?
Anyhow, that's what I thought you wouldn't like. The idea is too good to waste on some low-rate attempt at a independant film... you would need a moderately high budget for this film to even work, let alone be good, and I am talking millions. Look at Twilight and that has hardly any special effects at all, budget: $47mil...
Of course, you could got the microbudget route, but what's the point in ruining the story? Just think about getting over the gay thing and actually using some of your creativity to further your career. Pfft, who lets a little thing like sexuality get in the way of there life, right? lol (yes I realise, lots of people do.)