I own a Core i7 version with 16GB RAM with a 1TB 5400rpm hybrid drive. But the chipset is the same as yours.
So, there mustn't be any issue with a 2*8GB configuration, hybrid drive or a 7200rpm drive. You can install all of this by yourself. Just remove the bottom panel by removing the 6 screws (2 are fixed to the plate) to expose the HDD and the RAM modules. Install and then close.