As a step to reducing the amount of writing done to the disk, before I start using it in earnest I might have a go at moving "Documents and Settings" to one of the physical HDDs.
You might want to keep it this way! I have read in several magazines that at present there is no tool that can guarantee a successful deletion of data on SSDs. So if you plan on selling your SSD a few years down the road, make sure that you never had personal files on it, unless you want to share your little secrets (which we all have).