I actually started playing a Sorcadin in PFS
My original stat array was
Cha 14+2 racial = 16
I went Half Elf, replacing the Skill Focus with Exotic Weapon Proficiency (thanks to Ancestral Arms), grabbing an Elven Curve Blade as my Weapon. Level 1 feat was Weapon Finesse. Traits were Magical Knack and Warrior of old (+2 CL up to HD and +2 initiative, respectively)
I opted for 13 str to qualify for Power Attack. Ironically enough, at level 3, I haven't taken it yet.
Level 1 I did Sorcerer (Draconic, Golden). I used the tattooed Sorcerer Archetype to boost spells of the Evocation school (that way I can make my buffs and replace claws with a thrush familiar (bonus to diplomacy, and i now have a +2 to perception which is a class skill thanks to my bloodline with an additional +2 racial). Starting Spells were Mage Armor and Color Spray
Level 2 nothing much changed. +1 BAB, +1 Will, one more spell per day
Level 3 I took a level Divine Hunter Paladin to get Precise Shot for free. Level 3 feat was Toughness. Also gave me at will Detect Evil and 1/day Smite Evil (+3 attack/AC and +1 damage, bypassing all DR)
I also mustered enough gold to make my weapon a +1. (2300 gold inc. the price of making the weapon masterwork)
anyway, at level 3 I have 25 HP (which is low, but next level I get like 9 hp, so that should help a bit), my attack bonus is +6 (+9 when smiting, and I always try to flank), my damage is 1d10+2 (kind of low, I know), and my AC is 17 (when using Mage Armor, which is an issue).
So right off the bat, we can see the main pitfall is the lack of AC and low HP. So far I havent died though