pretty much solves your questions.
Like the above thread mentions, theres no way of defaulting to another hdd without moving system files which is more or less impossible. Just change your internet browser to download to the hdd instead in the options menu and when installing programs specify custom directory to the hdd.
also follow this guide, there are tips for increasing the ssd's performance you may be interested in. http://thessdreview.com/ssd-guides/optimization-guides/the-ssd-optimization-guide-2/
Dont have to follow all of it, just mainly disabling defrag, system restore, recycle bin, drive indexing, ssd power mode and perhaps moving the page file to the hdd.