NASLite Network Attached Storage

Hi, I've got a general RAID question. I am thinking of using a true hardware RAID card and I have 2 configuration options:
1) one RAID-0 array using all 4 drives
2) two RAID-0 arrays of 2 drives each

My purpose is mainly to stream videos. I did a bit of reading and a 4-disk RAID-0 array can go a bit above 400MB/s max sustained read, but if my ethernet port can only do 1000Mbps, isn't option 1 an overkill then? I'd be better off with option 2, unless anyone can suggest reasons otherwise?

as long as the date isn't mega important I'd go with the 4 drives in raid 0

films etc.. can be replaced in the event of a drive failure.... (very rare anyway)

it's just easier to have 1 big drive to access than the 2 at half the size

A 4 way RAID5 will act as a 3 way RAID0 on read - you just lose 1/4 of the available storage space, but gain fault tolerance.