Chords just take time and practice in my opinion.
I think the reason you can't reach some of the frets is just because your fingers haven't become flexible yet.
I remember when I started playing I found the power chord really difficult to do. It's so easy now but if you ask anyone who doesnt play the guitar to finger a power chord (telling them how), they'll find it very difficult too.
Anyway just keep trying and soon it'll become easier.
Hodge