if you spent all that money on a (very!) nice system, don't get cheap on the power supply. you risk the chance of a cheap power supply failing and potentially destroying all the components in your system.
plan to spend around $50-100 for a 400watt power supply. most antec power supplies seem to be very good, but some antec models are very hazardous like the antec truepower 430watt. read the customer reviews at newegg, it is very, VERY helpful.
my personal experiences are that windowed cases are very cool for about a month, than they get really annoying to look at. i personally bought the antec 1080AMG case that came with the antec truepower 430watt power supply and there was a guy who bought the same thing and it fried everything in his computer, so i bought an enlight 420 watt power supply for $55, it's quiet and works great so far, not to mention it it looks great.
i don't think you looked at the cases at
www.newegg.com long enough. they stock almost every kind there is. take a second look at the chieftec, cheming and antec brands especially these models:
-----------------------------------------------------
1) ANTEC Performance PLUSVIEW Model PLUSVIEW1000AMG- with Side Window Snap-On Fan Clips Retail ***No Power Supply***
pictures:
http://www.newegg.com/app/Showimage...24-20.JPG/11-129-124-14.JPG/11-129-124-21.JPG
---------------------------------------------------------
2) Chenming Model# 601AE-SL (Silver) w/ Side Panel Window Front USB 2.0 - Retail
pictures:
http://www.newegg.com/app/Showimage...22-02.jpg/11-125-422-06.jpg/11-125-422-05.jpg
---------------------------------------------------------
3) CHIEFTEC Server Chasis (Aluminum Workstation Tower with Plastic Front Cover) SILVER COLOR w/ Side acrylic window and a Case Fan on Side Window **Now with 2 x Front USB2.0 and 1 x Firewire IEEE1394 ports** Model AX-01SLD RetailWeights
pictures:
http://www.newegg.com/app/Showimage...22-05.JPG/11-125-222-04.JPG/11-125-222-06.JPG
------------------------------------------------------
4) CHIEFTEC Server Chasis (Aluminum Workstation Tower with Plastic Front Cover) BLACK COLOR w/ Side acrylic window and a Case Fan on Side Window **Now with 2 x Front USB2.0 and 1 x Firewire IEEE1394 ports** Model AX-01BLD Retail Weights Only 18LBs!
pictures:
http://www.newegg.com/app/Showimage...21-04.jpg/11-125-221-05.JPG/11-125-221-06.JPG