The ones you linked are BC V1's, which are average.
BC BR's are better for a couple hundred extra off JustJap (
http://justjap.com/store/product.php?productid=19318&cat=270&page=10).
Or for basically the same price as the V1's from JustJap get them from Street to Track (
http://www.streettotrack.com/coiloversbcracing.htm).
Easy to fit - probably need a breaker bar for the lower rear strut nut as they like to be PITA.
You'll need a 19mm spanner and socket, a socket wrench and/or a breaker bar, 10mm, 12mm and 14mm sockets.
If you could be bothered to mark the front camber bolt (the top one), do that, or take a picture - doesn't really matter thou cous you'll need an alignment afterwards.
Put them all in, go for a drive round the block, then measure the tyre to guard clearance on all 4 corners and write them down, then adjust them up/down.
Go for another drive and re-check the height.
They settle very slightly over the next month or so.
To set the dampening, you need to wind them full hard first (clockwise) then down however many clicks - start in the middle and play around from there, but you alsways have to wind them full hard first.