[greatdane]

Can't really answer the first couple of questions.

3) Also, is it true that Cha effects your Mez/Enthrall songs, or is it ONLY your Charm?

I'm not completely sure if charisma affects bard charm, but I can say with a good deal of confidence that it doesn't affect mez, lull, or anything like that. They always functioned just like any other spell, for both bards and enchanters.

4) About Bard damage, Ive heard that it's pretty decent, but nothing like Monk/Rog/Warrior because no double attack. If thats true and there damage is just alright, is it worth it to even use weapons in a group? Or should you instead just take an instrument out and sit in the back playing songs?

Bard damage isn't very good, but if you melee and twist your chant dots, you can put out decent DPS. It'll almost certainly be lower than a warrior's, but not pitifully low. This means doing nothing else, though, so it generally isn't worthwhile - you should be singing buff songs, mana song, regen, or something like that. I'd say if you haven't been appointed a specific role (like singing fire resist on a raid) then you can go ahead and melee while singing your haste and mana regen or whatever most groups will expect. When you're needed for a particular raid role, go with an instrument. Also slap on a guitar when you're out of combat in groups, just to squeeze out a bit of extra efficiency.

5) Lastly, if you were going to twink a Bard which items would you try to twink them? Stat items like things with +Sta/Cha/Dex, or HP items like 35hp earrings / HBC / SSB etc.? Also, what twink weapons would be best for Bard, if its even worth twinking them weapons?

I'd go with HP/AC items and decent weapons. Dex supposedly affects song fizzle rates, but they seem to be bugged here and who knows if the code works the way it should. Make sure your strength is good enough to wear plate, and then focus on survivability stats. If some of it has dex on it, that's just nice.