I like that Abe, gives everyone a chance to gain a couple levels before facing the threat of PvP. Keeps the player in the game for blood feuds rather than just killing him. In thnking about it, I wondered if you allowed PvP deaths in the game, that you may not have five people left to reach lvl 10.
I think with Dubb's suggestion you will see little PvP-because we all want to stay in the game as long as possible because its so much fun.