Lol they incorporated all of them. Good job. Isn't that a much better price?

Suggestion 1 (Major Savings):
It'll probably be more cost effective to get a RAID 1 of 1TB Drives. Then again, $5000 didn't seem to bother you, so whatever you want. grin
-RAID 10 4 X 500GB = 1TB Usable Capacity (High Write Speed, High Read Speed) $250 X 4 = $1000 (Bear in mind these drives only cost about $100 on Amazon, if it's $100 for the consumer, Dell's profit margin must be massive)
-RAID 1 2 X 1TB Drives = 1TB Usable Capacity (Read Speed Boost, Write ~ Single Hard Drive) $290 X 2 = $580 (Bear in mind these drives only cost about $120 on Amazon)

SBS Essentials isn't that intensive so just saying if you want to, you can easily get 2 X 1TB drives. It should also be apparent, a big chunk of the price comes from here. Should be around $1700. Use the savings to get a UPS (backup battery) and an external hard drive. Those will be more useful.

Suggestion 2:
You might want to get a DVD-RW/Burner instead of the reader ("1 16X DVD-ROM,SATA, INTERNAL"). It's about $20 extra, but you never know if you might need to burn a DVD on the server. Just something useful to have. Maybe for backups or something.

Suggestion 3:

Make sure you get the one with the Intel? Xeon? E3-1230v2, slightly faster than the V1 and uses less power. Same price.

Suggestion 4:
Also, don't forget to pick up an external hard drive (for backups) and UPS.

Suggestion 5:
Add RAM yourself, it's a simple as putting a card in a slot. Takes about 5 minutes max or you can pay $180. Your choice.