What are you planning to do with this machine? I'm kindof assuming gaming based on the peripherals, but you could always be using the speedpad and rumblepad as blunt objects to bludgeon people who get close to your computer... Actually, it kinda looks like you just said "all the extras" without considering whether you'll use them. Are you really going to record TV shows? Do you really need wireless G? Do you have specific games in mind for the rumblepad? The extras seem to be adding quite a bit of the cost, which is fine if you're going to use all of them, but make sure that its not wasted. Also, are you planning on overclocking?
The first advice has to be: Go with AMD instead of Intel. At this point, there is absolutely no reason to go Intel if you aren't doing 80%+ of your work on the 3-4 content creation programs that are optimized enough for Intel that it can match AMD. The gaming benchmarks aren't even close, especially when you consider cost.
I'd probably go with a retail boxed socket 754 Athlon 64 3000+. The retail heat sink should be good enough unless you're planning on overclocking, so you save $30 on the processor and $40 on the heatsink. Alternately, you could go for a socket 939 Athlon 64 3000+. which should be more future-proofed and overclockable, but the premium for getting a dual-channel DDR system (the main difference between 939 and 754) is higher than the performance benefit.
For motherboards, most that have an nForce 3 250 or nForce 3 Ultra chipset are good, but make sure its not an nForce 3 150. Or wait a few weeks and get one with an nForce 4 chipset, but that'll mean moving to PCI-Express for your video card, and at the moment there isn't really a reason to other than future expansion.
Second:
How bad is your power, and do you really need a UPS? I'd personally go with just the surge protector unless you're subject to frequent short power outages or brownouts. Short outages are mainly just annoyances, and the battery won't last through long outages so it won't help you there.
I'm not sure what to say about the video card, it really depends on what kind of games you're expecting to play. If you're looking for at least decent playability for the next 2 years, that graphics card should be great, if you're planning on replacing sooner, you might downgrade a bit.
I don't know the LCD you've chosen so I can't recommend for or against, but if you buy one I'd highly recommend finding one in a retail store and checking it for dead pixels before buying it. The return policies for dead pixels are still pretty bad, but most retail stores will let you look at a monitor before handing over the cash. Also, it says "w/speakers" so you might be able to shave a few bucks off the price by dumping the other speakers and using the integrated one (note: I have no idea how good/bad the integrated speakers are, so this might or might not be a good idea).
The NEC 3500A got better scores than the BenQ drive you selected, and is only a few bucks more expensive. I know you want to _lower_ the price instead of increase it, but its only a few bucks and might be worth considering.
Reference:
http://www.anandtech.com/storage/showdoc.aspx?i=2260
Also consider waiting on some of the lower cost peripherals. I'm not sure if you can swing it, but I'd personally do it that way and then hint that I wanted them as christmas gifts. Same might go for the keyboard/mouse, but thats a bit more iffy because of the higher price and definite useability improvement with the MX mouse over most normal mice. Waiting on these is also a good way to spread the cost out if you can live without them immediately (and also might work for the LCD panel). Its real easy to upgrade your computer in 6 months by buying a good LCD monitor, and less easy to upgrade the hard drive/video card/etc.
Ok, thats my long winded advice. And yes, I'm at work and bored.
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