Those R4 drives are great, but you do know they are enterprise drives? and has RAID-specific, time-limited error recovery (TLER) and is SATAII. I wouldn't buy that drive unless I was buying more to put into a RAID Array or really worried about losing any information on the disk. If you are then I would buy no less then 2x drives in RAID 1. Any single drive can fail and will. You can't judge it by having one for so many years, because if you do then you'll be SOL when it fails. I'd buy a 500GB WD Black for $69.99
and put the rest for the Ti card or a bigger monitor.