Advice On Layout Please

I’ve been doing this as a favour for a friend - http://www.reviewmethis.co.uk/preview - basically they’re a review site that aim to review Christian products.

The issues I have:
[LIST]
[]Is the header too large?
[
]Where can I stick the adverts that he needs (not Google - otherwise it’d be simple)?
[*]Overall does the simple preview seem “right”?[/LIST]Thanks,
Andrew :pa: