Writing a whole, real book

GULP I'm writing two books at the moment: one fiction, and one I might just make some money on (but the fiction idea is really cool, never done before etc). More I cannot say.

transformers novelization?

I don't think my agent could sell that, s1ocki.

then u need a new agent!

No, I really don't. Again, more I cannot say.

question: been working on an ideas and comprehensive notes for a fiction novel. it's the first time i've ever written anything of any massive length though, seems intimidating. i've got a load of scenes, characters, plots, ideas, etc all sketched out but haven't started writing it yet. i'm wondering if to switch it to a screenplay, or script for radio? or even a series of short stories. sounds kinda dumb but i'm stuck at the moment wondering which is the best route to go down, for a couple of reasons: time (radio thing would be done in a fraction of the time, plus my subject matter lends itself well to sound) and market forces (i understand a one off radio play is more likely to be picked up than a novel).

anyone else been in this position? sounds silly but is there some kind of checklist i can run through to help decide or is it a case of just picking one and going at it?

Not sure I'm in a position to advise, because I still haven't finished one, but I'd say they're very different things. If you want to do internal lives, it has to be a novel; if it's one-on-one relationships, then drama; protagonist-in-society might be more screenplay; that kind of thing.

If your instinct says 'play', write it like that.

that's actually quite helpful. thanks IK