Shoulder Pads DO NOT Expire

No.

110s give 8 to a stat and 4 att, 120s give 9 to a stat and 5 att, and the 130 gives 10 to a stat and 6 att.

The 100 recipes (7 to a stat and 4 attack) can be obtained through an NPC for paltry amounts of mesos and the hardest thing to get to forge it is hours spent doing PvP. Hours that will be more fun and take up less overall time than CvP will.

On that note, pvp supposedly yields amazing xp.