First ESXi Server

I decided that I need to build myself a home ESXi server in order to consolodate my old physical servers I have. Using older hardware and doing very few properly managed backups, I’ve lost important data more then once. My goal here will be to build a more stable environment to run my servers and also expand and try out new ideas and solution within the virtualied environment.
Last week, I began ordering the parts that I will use for the new server build. I will also be using some old parts from previously built servers that are either laying arround or currently running and will soon be replaced.
Here are the new parts:
Power supply: Antec TruPower 550W (90$)
Hard drive: SAMSUNG Spinpoint F4 HD204UI 2TB (105$)
Motherboard: SUPERMICRO MBD-X8SIL-F-O (195$)
Processor: Intel Xeon X3440 Lynnfield 2.53GHz Quad-Core (240$)
RAM: 2x Kingston 4GB DDR3 SDRAM DDR3 1066 ECC (107$)
USB Key: Kingston DataTraveler G3 4GB USB 2.0 Flash Drive (7$)
Case fan: 2x APEVIA CF8S 80mm (3$)
I am planning on reusing the following hardware:
Case: AOpen Custom PC
Hard drives: 4x Seagate Barracuda ST3500320AS 500GB
Hard drives: 2x Seagate Barracuda ST3160812AS 160GB

RAID controller: HighPoint RocketRAID 2300 PCI Express SATA II (3.0Gb/s) Controller Card (130$)
Hard drive cage: COOLER MASTER STB-3T4-E3-GP 4-in-3 Device Module Hardisk Cage (24$)
I will document my build process once all the parts arrive