1. 10-20 ping!?!?!?! I quickscope decently with 180 ping.
2. AWM is the best quickscoping gun to get into the habit of, r93 gives you bad aiming habbits.
3. FR-F2 isn't too bad i guess, but i found it as more of a short hardscoping gun.
4. My fps is around 120 on average.
5. Point your cursor in the direction till you see the red text, then right click and left click nearly at the same time. That's how i learnt and that's how i do it.
6. I find scroll is the best thing to swap as Q usually lags a tad for me and scroll is much faster.