Need your knowledge my friends

hello all , I've been scoping the forums decided to finally come ask a question. I have a m15x i7-q740 gtx460m 8gb

1. I would like to upgrade ram to 16gb (2x 8gb) which brand would you recommend and I also read around that you can't do 16gb?

2. Seems like the right thing to do is upgrade to 920xm , what GPU would been a good recommendation?

3. What other upgrades would be in my interest?

Thank you in advance

Need your knowledge my friends