There is a left arm, right arm, center arm, and steering damper, which runs parallel to the center arm. It is about 50 US dollars, and is well worth replacing. When i replaced mine it had no shock left in it, in fact, hydraulic oil was dripping out of it.

The rear job I know nothing about so i cant help you there. I wouldn't wait too long between jobs. I would do the front job last, then get it aligned. After i did mine i waited about 2 weeks before i could get an alignment, and it was off pretty bad, the tires would squeal when i made turns--even at slow speed. So, plan ahead, see if you can have a shop that you trust, or the dealer align it for you right after you install the tie rod arms.