the base skills would most likely be 120 weapon skill, 120 ninjitsu, 100 hiding, at least 75 stealth and at least 60 tactics which leaves 245 skill points for whatever else you prefer. ninjitsu can be less than 120 depending on how you wish to use it. stealth can be more depending on what type of armor you wish to use and whether or not you wish to max out deathstrike damage. tactics can be more too.
do you want to go melee or ranged?
do you want to run resist? if so plan for 120 because it's either 120 or 0 in pvp.
what will you do for mana regeneration? what will be your source of healing?
are you going to play solo or in a group?
and most importantly in what environment are you planning to pvp? regular shards or Siege Perilous?