Soldering 0603 (or larger) component by following these instructions is rather easy. But be sure to buy good quality pin header. By 'good quality' I mean:
-Having discs or cylinder that will prevent the plastic part from sliding on the pins when you try to remove the led from the breadboard
-Having round pins with rounded extremities. Round pin will fit into the 0603 half-circular holes on each side of the component, and rounded ends will ease the snapping of the component in the pins.
Here what I used:
(Ok, I also used a crap soldering iron!)
Hah! I just did this the other day. Needed a quick-and-dirty voltage divider for 5V/3.3V. Soldered two 1206s to three pins of a pinheader, and then by "dupont" cable in/through the project.
Very handy for temporary wiring as well as for breadboarding.