Actually, your scores are pretty good. 5.9 for your drive is typical. Yeah, SSD will improve that, but, its a notebook. In spite of what the marketing weenies would have us believe, they are not desktop replacements. They are very powerful computers jammed in to very small spaces with virtually no wiggle room for expansion, or proper ventilation. Notebooks were initially designed for, and still are best suited as computers for road warriors. In fact for many (if not most) notebook buyers, it is all about weight, thickness, and battery life. Good performance is a given.
And there is no "ATX Form Factor" standards for notebooks so they are very proprietary (including drivers). Therefore upgrades are difficult and limited, and often much more expensive compared to a PC.
Yeah, it would be nice if your graphics score was a bit higher, but again it's a notebook and that by no means is a bad score (see note below). But even if you could put in a bigger horsepower graphics solution, because it is a notebook you could not fit the necessary cooling in the tiny case to keep those horses cool. Remember, normal size desktop and tower cases, with multiple and large (≥ 120mm) fans are still challenged to keep the interiors cooled when the hardware is being pushed.
Your 6.5 gaming graphic score is nothing to sneeze at either. That typically indicates the dedicated graphics RAM (either on card, or on the motherboard) plus shared system memory. So your graphics solution likely has 1Gb of dedicated RAM and is stealing, err... sharing another Gb. You have 4Gb of system RAM which is good with 64-bit, but with shared graphics taking some of those RAM resources, it can restrict a 64-bit OS. If your notebook supports it, swapping out your 4Gb for 8Gb will let that 64-bit OS run free and allow your graphics solution to "share" all the RAM it needs (though I don't think it would take any more) without impacting overall system performance.
Of course adding even more RAM will place greater demands on the notebooks already limited cooling capability. So you will need to be sure you keep all vents, access ports, and cavities free of heat trapping dust. And I recommend the use of a
Notebook Cooling Pad w/ext. power supply. I prefer those with their own external power supplies so you don’t put more strain on the notebook, causing it to generate even more heat.
Note about WEI scores. It is not a benchmark program. I have found many users were perfectly happy with their computers - until they looked at the WEI score. They are just a general guide that Microsoft has arbitrarily set numbers to. There is no perfect 10 for example and the weighing can and has changed with technologies - as it did when SSDs became common. I personally don't like or pay much attention to the WEI. Perhaps if they did away with the base score, I might like it more but if I want to compare this machine to that machine, there are better programs specifically designed for that purpose.