So I JUST started playing this game. I started a mage got to lvl 7 got shapeshifting and INSTANTLY regretted it. What a waste. So I jumped on the forums and started reading and the game sounds really good. I played many mmorpgs in my time so the skills/talents/abilities arent to hard to figure out. On my first play through I missed the rogue chick in Loethering or w/e. This time through I grabbed her and now I just arrived at camp. Im lvl 7 along with my other 3 party members who are, Alistar(my tank) Rogue Chick(ranged dps, I chose ranged becuz of friendly fire, ima AoE nut) and Morrigan(caster dps). I have the dog and the murderer from the cage in loethering but I dislike them both. Now like I said I skimmed thru the forums trying to avoid spoilers but give myself some general knowledge of the game. My plan from here is to get that Wrynn mage from the tower and make her a Red Mage(FF reference

) Healer/Supporter/CCer in place of Morrigan. So I'll be running with Alistar-Tank, Rogue chick-range dps, Wrynn-healer/supporter/ccer, and myself Mage (caster dps)
My questions are..
1. Am I heading in the right direction as far as group composition?
2. As far as quests are concerned, if I complete the main quests for a city, can I leave, progress the main story line, then return later to finish side quests?
3. Does the path I take from the camp matter, should I go to a certain place first?
4. Im level 7 and have 1 point for a special talent but all I have unlocked atm is SShifter -.- I was thinking BM and then SH just for the passive bonus. <----Good idea?
5. What happens when you beat the game? Start another playthrough, or can you do other things once youve beaten the game.
6. Im playing offline on PS3...whats different if I play online?
7. AND THIS IS THE BIG ONE, are there events along the way that I can MISS and lose out on something IMPORTANT, then not be able to return to achieve that something.
Thanks ahead of time, sorry for the mispelled/forgotten names of characters. Like I said I jsut started