I would deffinetly go with the antec, your on a small budget?
1 DVD would do fine, unless you want to copy directly...2 would be faster but it really don't metter 1 or 2, in your case id go with 1 and then later buy a better one...
BTW your case comes with no power supply.
Casual (AMD 4000+ x4) (Stock mobo) (750 Gig + 8 TB Xternal) (150 RAPTOR) (9800GT OC x2)
(OCZ PowerStream 800 Watt) (2G OCZ) (XP/Vista)
Torrenter (1.05GHZ) (Stock mobo) (250GiG) (9200 Radion) (Stock PSU) (768MB) (XP)
Laptop (Intel Core 2 Duo @ 2.8Ghz) (2G) (8600GT) (XP/Vista) (500GiG)