Laptop Cooler, Mouse, and Case

Hello everyone. I needed some help on deciding on some accessories for my computer. My laptop is a 17 inch Gateway P-7915u. Here are the things I need help deciding between-

1)Laptop Cooler-
a. Zalman NC2000
b. NZXT Cryo LX
c. Cooler Master Notepal Infinite

I've got vents all over the bottom of my computer, and one to the left side.

2)Gaming Mouse-
I currently have a razer lachesis. Although I like it and I am used to it, I feel like I need a change. I was going to go for a RAT 7, but I've heard bad things about it. I would like your views on which one is the best, since there is no "best" mouse I understand that these will be personal choices.

a. Razer mamba
b. G9X
c. RAT 7
d. Kone+
e. Other (Please specify)
f. Stick with the one you have.

I use my current mouse at 4,000 dpi 1,000 hz polling rate.
(PS: I'm still not sure about how to use this software. If there is a way for me to make my mouse faster, please let me know. I also understand that many people feel dpi is just a gimmick- however, I prefer a fast mouse. A fast mouse won't make me super-kick-, but I feel more comfortable with one.)

3)Laptop Case
This is the hard one. I have found no laptop case which just covers my laptop. I sometimes have to carry my laptop outside of it's bag, and I want it to be protected. If anyone knows a laptop cover which might just clip on like the apple ones, please let me know. I would prefer it to be a hard case. Please bare in mind that I have a battery sticking out of the back of my computer.

Thank you.

 

........Bump.