Some small questions

[Sarloh]

First off, I'm not a new Planetside 2 player, yet I still have some questions:

1. The Armistice or the Hailstorm? My main need for an SMG is for an Infiltrator, but might still use it for another class. ( Note: I haven't got a lot of interest in the Laser Sight so that doesn't need to be a factor )
2. T7 Mini Chaingun. Is it still good / useful in these times?
3. Rocket launchers. What rocket launcher would you recommend for all-around use?
4. Pistols / secondary. What pistol would you recommend for all-around use, medium to close range.
5. Is the Needler (mosquito). Is it a good AA weapon or should I stick to the primary?
6. Mosquito: primary or secondary? If I come face to face with a hostile fighter and I have equipped the default weapon and the A2G rocket pods, what would be better firing; the gun or the rockets?
7. Camo questions. If I buy a camo for infantry does it go for all my classes, the same question goes to the vehicle camo. And also which camo would you recommend for each continent?
8. Tank weapons. Any suggested weapons for the ground vehicles?

Well that should be all for now, it's a lot I know but a single answer helps. Thanks.