Alright i have a few questions that all pertain to the same Item, Which Is the Punisher From Trigun.

  1. starting with crafting a masterwork weapon
  2. enchanting to +1 costs 1000gp, 80xp, and takes 2 days by my calculations. when enchanting to +2 would you just add another enchantment of +1 or would the +2 replace the +1?
  3. if i wanted to add a spell effect to an item, similar to a wondrous item, does that count as an enhancement bonus and take up space on the item's total enhancement bonus?