Hey Kris.. just saw this. My 2 cents:

Dont fret over hard rive size. There are USB external hard drives that work fine for storing large amounts of data and you can keep them offline (for more privacy and safer storage) I have three spare hard drive that i keep in my gun safe. Another "issue" though not really, is that data stored on a Windows 7 root drive will often be accesible only as long as the OS isnt crashed. Lets say the PC, (bad chip or something) and you pull the hard drive out to get the data. Since the root drive is not working as the master OS, Windows will "protect" data on the old drive (it can be gotten.. its just a little more work), With an external drive, by default there is no security, and thus the data is easy to get to. ( which means to need to the drive secure physically).  

The ones you picked will do fine for all around stuff. The two AMD ones use APU ( verus CPU) the APU is both the CPU and the GPU ( graphics) function.  Upgrading ( which most people dont do anyways) would be a tad bit more complicated.

Newegg is BY FAR the best online retailer I have ever used and I have been using them since 1998.

1 Terabyte is a LOT of storage.  

I still like to build my own. Its not too hard and they can be upgraded very easily. My son is still using my old PC from 2003, and yes he runs the biggest games there are.

Good luck!

It's your patriotic duty to spend..help the economic recovery.