i ran into some uncertaincies when creating my character.
i did some research and here are my results:
perception
in f3nv, the vigor machine will tell you that perception will affect your over all accuracy. some forum posts on the nets tell that perception will affect the crosshair drift when using scoped weapons.
both is NOT true. i used console commands to alter my perception between 1 and 10, and my vats accuracy with guns and my crosshair drift remained unaffected.
luck
it seems that luck massively affects the condition of wepons found in the world.
like: i made a char with luck 10, and all the weapons in the silver rush store where in pretty perfect condition.
for another (luck 1) char these guns where almost broken.
note that i made a mistake when i did this thest, the luck 1 guy also had the build to distroy trait, with could have affected the condition a bit, too. also my real live luck may have had affected this test.
interesting: it seems that the item quality and store inventory is created when you leave the doctors shag for the first time.
i would suggest to have luck 10 when you go trough that door and tune down that value when the game gives you the chance to rebuild your char when you leave goodsurce for the first time.