johnwasser:
If a full 5M strip draws <=48W@12V that's <=4A. Each of the 200 3-LED segments (2.5cm) draws 20 mA. Your 100 cm (1 M) segments should draw 800 mA (9.6W @ 12V).What made you think your strips were 5W?
You're right 
I need to verify this thing. Either they gave me the wrong datasheet or they told me b******t. The right datasheet is probably http://www.entityel.com/datasheets/1300ENSTRIP5.pdf
CrossRoads:
Looks like you're ready for a PCB. How soon do you need this?
ASAP, I'd say yesterday!