Hi wildstallion,
As mentioned by another ClubSnap member, the decision to sign a full/limited model release lies entirely with an adult model or a young model's parents.
Another ClubSnap member also brought up a fairly justified point about the planned photoshoot being non-commercial -- more towards personal self promotion (as I would assume). If there is a definite intention for commercial use, most models would say/feel it's fair to charge more.
Personally, on the matter of stock photography, I'm not sure how models would charge because there's a possibility that the images may never ever be used. As best as I know, models don't charge as exorbitantly as for commercial use. If you're resourceful, you could do a shoot which doesn't cost you too much.
Very often (in Singapore and it appears to be even in Australia), model releases are not signed for photo shoots when they are non-commercial and self-promotional. However, this doesn't mean that there's no benefit in doing so. It's actually better to sign a model release for any shoot but (we know as human beings) laziness tends to get in our way.
Having said that, I have encountered photographers (in both countries) who practise the habit of signing a release even though it's non-commercial. :thumbsup:
I'm assuming that you're not a S'porean. If you come from a western country, I'm sure you would be aware of how important it is to sign a release, not matter how trivial the shoot may be. A lot more lawsuits happen in US, UK and Australia than in S'pore, because of images, and even of images that don't contain a human face.
Anyway, I suspect that you will have difficulty getting a S'porean to sign a full model release (assuming that they know what a full model release really is). Another ClubSnap member said it rightly that a fully released image can be used overseas in an advert/manner which the model wouldn't like (although we often tend to think of the worst case scenario which may really never happen).