if you want max dps and pvp I think templar isn't the best choice - I have a templar + chanter combo because I want a tank for end game (pve) - my second team is assassin + cleric to get me an end game healer and an assassin for dps/pvp

for fastest and good survivability I think gladiator+chanter or assassin+chanter would be best

depending how it goes in the abyss I may switch to solo mode - I don't know yet (the servers went down while I was collecting quests on the first abyss quest hub and watching all the training videos)