Ideally, do a fresh install onto the SSD. Windows will recognise the SSD and make (some of) the appropriate optimisations for you. This assumes you have a Retail Copy (and a DVD drive).
Being a laptop, you probably have an OEM version pre-installed, possibly with a Recovery Partition. In that case, cloning/migration is the only option, and the Intel software should do it all for you. Just secure erase the SSD first, set AHCI mode in BIOS, then let it do the rest. (You may have to re-activate Windows). The main thing to check is that defrag has been disabled on the SSD, you may have to set this manually. There are many other 'tweaks' depending on whether you are aiming for best performance or minimal SSD wear, or a sensible compromise. Personally, I'd disable System Restore and Hibernation***, and possibly Pagefile too if you have 4+TB of RAM. Check this guide for starters:
*** Before changing anything (except disabling defrag), I'd run the laptop for a few days and check that it functions normally, ie sleep and hibernate still work. The Sandforce controller in the 520 can be a bit 'touchy' with some laptops, Macs, and my desktop.
Got it working thanks allot!