Hey RobM,
I've been trying to do the same thing - sorta - by moving the price under. Unfortunately, the price is not associated with any classes or id's, so it's very hard to get to move unless you can read PHP and edit with a bit of knowing what you are doing.
For the more info button, you can edit the class .listingBuyNowButton and change the CSS on it.
For by Buy Now/more info piece, I found out you need to have the Buy Now button there (you can set this in your Admin - config - product listing), and you can edit this class. For mine, I have done:
.listingBuyNowButton {
position:relative;
left:-370px;
top:50px;
}
This moves it over and under the description text. Try that and see what it does..
Hope this can be of some help!