I have been told to build a Dragonborn Paladin and was wondering if the greatspear would be a good choice at level 1. If so, do I need a proficiency feat? The stats for that are:

Superior two-handed polearm  

+3 with 1d10 (Reach)

If I can use this, are there any feats or abilities that would complement this weapon and its range? If not, are there any weapons that would work better?