oh ... and expect to spend a little time with your drivers - the newly installed OS will probably find most of them automatically but there's usually a few problematic ones. I know the best thing to do is to search for each problematic driver and manually install but ... personally I find that very frustrating. I've had very good luck with 'IO Bit Driver Booster' (there is a free, trial version) - download it, open it up, let it scan and hit the 'update all drivers' button - give it the time it needs to find and install the drivers and ... bingo, job done!
Enjoy all that extra Ram - it should make a huge difference!