well i have a shopping list and i cant decide what to get in what order

heres whats on my list.

project 1: 250gb raid 1 array. using 2 wd 250gb sata drives. and a promise fastrack s150 tx2 plus (is this good?)

project 2: second nec fe1250+bk monitor.

project 3: change case to lian-li pc-76