Checkout Page Query

[Paul]

I have seen this thing in some of my surveys also. People don't like scrolling down again and again. The conversions are seen to increase by almost 15% if the scrolling down in excluded.
In this case of yours I will suggest you to break the entire page into two or three pages. Make the first two pages for the information that you need to be filled up and use the last page only to checkout. In this way if they have any error in filling out the form then it will not cloud the fact of checking out.