I've had a look back over the initial character descriptions I wrote, and in both cases my perception of how they will be has shifted. Not hugely - the basic idea is still the same - but enough to warrant a re-write of the description! One of the reasons for experimenting like this on a blog is to solidify such things before I start writing proper, so I suppose it is serving its purpose. I had previously expected that Edward would be on at least an equal footing with George, but I'm increasingly thinking of George as the lead.
As for plot, I'm keen on the idea of George unsuccessfully pursuing Ellen, unaware of the fact that she is way, way out of his league. I think that she might end up having a little soft spot for him simply because he is brave enough to try, and is probably quite different from the rest of the small subset of men who are brave enough to hit on her.
One problem that has to be addressed is making sure that the readers sympathise with both the characters. George is quirky, shy, and naive, whereas Edward is tactless and inconsiderate. Trying to make them both likeable in spite of this is difficult. The story is essentially a coming-of-age tail, with the spin being that there are two of them doing it at very different times of life. If people don't like the characters 'before' then they aren't going to stay interested long enough to enjoy 'after'.
Another note on characters; no character of any significance is based on a single real person, but I definitely draw inspiration from real life. Generally this is blending together several people I have known, exaggerating some features and discarding others, arriving at someone who is not the same as anybody, but is (hopefully!) nevertheless believable, interesting, and deep. I find Edward more difficult to write, perhaps because I don't/didn't particularly like the people he is drawn from!
I really hate the working title now. Will have to think of something better. I'm also starting to think that the parents will not appear at all, except perhaps over the 'phone.