New to Forum, New to Notebooks, need mouse, case, power help!

Hey everyone, I just bought my first laptop from dell (E1505) and got a sweet deal thanks to the coupons here. There are a few accessories that i need and quick as im leaving for Asia on the 9th.

First off. Mice- Is getting a wireless as opposed to a corded going to drain my notebooks batter life any more than normal? After some research on this board, i'm kind of leaning towards the Logitech v400 its usb and lazer. I do have bluetooh on the laptop as well, but i think having a usb key might be better so i can use it with other computer if needbe. And the BIG question here is, am i going to be ok using a wireless mouse aboard an airplane!? Im going to have a 14 hour flight ahead of me.

2nd. I need a Good Sturdy Notebook Sleeve. I plan on backpacking for a few weeks while im out there, not too intensive, but ill be getting around. Im very interested in the ZeroShock sleeves by Shinza, but i dont know which one will fit. My notebook is a 15.4 in widescreen dimensions are 14" x 10.45" x 1.44". Their case has 3 sizes for 15", but from looking at the internal dimensoins, its seems as if they were made for standard non-widescreen laptops. I know the Dell 6400 is pretty much the same as my E1505, does anyone have any hands on experience with either of these laptops and this case?

3rd. Power for the Plane! I need a power adapter that will work on the plane and isnt too expensive. I dont necessairly need one of those universal power bricks so long as i just have something i can plug my own brick into and still get power when in a plane or car. ive found this on bestbuy and it seems the be the cheapest thing i can find for what i want http://www.bestbuy.com/site/olspage...t&productCategoryId=cat08005&id=1075583463294
I dont however know anything about the wattages all these devices are rated for and whatnot, does anyone know what would be adequate or compatible with my E1505. This one is a 120 watt power adapter. Anyone know of anyhting better or cheaper? Will this work on all planes?

4th. Besides just an outlet adapter, am i going to need anyhting else for plugging my laptop into a wall in China and Japan? I dont know how the power conversion works.

Im running short on time, so i gotta order some of these things soon so that i can get them before i leave. Any help you guys could give me would be great. Thanks!