Basically I'm on the prowl for a device which will let me go without my schoolbag. Since I'm not familiar with PDAs and SmartPhones, I was hoping you guys could point me in the right direction. The features I'm looking for are:

-The standard Clock, Calendar, Alarm Clock, Notes and so forth
-Basic word processing app
-Handwriting recognition or some other very easy way to write massive amounts of text quickly, for effective note-taking
-The functionality of a FULL Graphical Display Calculator (i.e. TI-89 or better); is there some aftermarket app?
-Wireless Internet for browsing and email;
-Music Player supporting WMA playback
-12GB or more of storage space
-Fits in my pocket

Nice Additions (not necessary though):

-Screen about the size of the iPod Touch would be nice
-A USB port for the use of a memory stick (would lower the needed onboard memory quite a bit, so long as it's easy to transfer stuff back and forth)
-Ability to use After-market software and/or OSes (I don't mind messing with software a bit to get the features I want)
-Phone (then I wouldn't have to carry a separate one in my pocket)
-Skype with a headset would be nice when in range of WLAN
-GPS (completely optional)

And the whole thing should preferably be around, or less than $600-$700, if it's a lot less, all the better. Now I'm not even sure if such a device exists, but that's why I'm here!

Thanks Ahead!
-Arminius

P.S. - The bold to provide an quick overview, and for those that can't be bothered to read the whole thing

There is no phone currently out that has 12GB storage except for
HTC ADVANTAGE X7510
http://www.gsmarena.com/htc_advantage_x7510-2267.php