iii. If you can choose Oathbreaker at level 1 then you aren't much of a Paladin really.
iv. I'm in the Blackguard/Anti-Paladin camp.
Depends on your perspective - if for you Paladin means LG and thereabouts, then yes, III is true.
I - although a "traditionalist" in many ways, prefer to see Paladins in a broader sense, as "Holy Warriors" available to all deities i.e. allignments.