Is there a better match-up than this?

Basically, I want my 3 PvE primaries to be ones that are most wanted in PvE

Warrior, Monk, and Elementalist (correct me if I'm wrong on Ele, I havent been up to date with the aftermath of the AoE "Nerf")

I also want to have all 3 characters cover all 6 classes so I have to match all of them up. I was wondering if there is a better combo than this for PvE

Warrior/Ranger
Monk/Necro (or Monk/Mesmer)
Elementalist/Mesmer or (Elementalist/Necro)

Just go with what you like, you can even cover all professions with just one character if you want (but I agree it will be a bit slower that normal).

Don't believe in the crap "most professions wanted", most experienced players know that Tank+Nuker+Monk combo is a long way from perfect build.

Yeah, you can switch your secondaries later in the game so you should just go with whatever you feel like you would enjoy the most. Personally I think the least wanted combos can be the most fun.

My 3 PvE primaries are the LEAST wanted for PvE (Mes Nec Rang)

But yeah, you can switch secondaries, once you play for awhile you'll likely have all secondaries unlocked for all chars.

the most conventional are:
W/Mo
Mo/Me
-aoe dmg dealer {SS necro, MM, E, Barrage}

roles are pretty obvious, the warrior has a high AL so he draws all the aggro, while getting healed, and the damage dealers do their thing.