Hi Chantz, and welcome to our little corner of the universe. Reversing the whole outsourcing ethos, eh? I like it!

I'll let others, with more experience of playing fewer than a full team of 5 characters, advise you on the speed of leveling, etc, but do remember that once you hit level 20 the "xp boost" built into the last patch kicks in, and your xp from questing will go through the roof.

You may not be able to instance alone, but you'll certainly be trivialising all of the non-instance quests.

I would imagine that most of your xp will come from questing, and hopefully you'll make a few understanding friends along the way who will be happy to include you in their instance groups.

You might have had more luck in that regard if you'd made a different choice of classes (lock, mage, priest perhaps), but you've made a great choice for getting to know the mechanics of boxing and you can always switch if things don't work out for you.