This game is tough as balls. I am getting scores like 2-8

At least the team I was on was good.
Some questions:
1. Does anyone have any good keybindings that work for them? No need to mention the standard/default setup. Just anything unique to you that you found works better. For example: binding melee to a third mouse button or swapping the run and crouch keys. I have to say that I am fan of FPS on PC with keyboard and mouse but years of playing Modern Warfare on the 360 and I feel way more comfortable. For one, having more keys on PC is a blessing and a course. 101 keys for you to fumble around with and forget. Oh, I need to throw a grenade. Is that G or B or K? Or wait, I can equip it with .... 7?
2. Is there a way to show (team) chat without sending a message? Each time you send a message (start by pressing K), it brings up the team chat but disappears after a few seconds.
3. Any tips/tricks for flying copters and jets? I last about 10 seconds before crashing. Are you guys using all keyboard or keyboard + mouse?