1. This means on my veteran account i can make 3 new characters and have them to 60 without any leveling(or 59 whatever it stops at) because i leveled 6 others to 60?

Answer: No. You can grant levels to characters on the vet account from the RAFed accounts. For every 2 levels the RAFed toon acquires that toon can grant 1 level to the vet. toon. (I am not possitive if the RAFed toons can also grant levels to each other or not.)

2. If i boost at all with a higher level i get no extra exp gain correct?

Still a bit fuzzy on this one but I believe my answer is correct:

Answer: I believe you get the exp bonus if you have someone else boost your RAFed toons and not you boost with the Vet account (I am not to sure though). I know that if the Vet. account is grouped with the RAF accounts ALL have to be the same level in order for ALL to receive the exp bonus from killing MOBs. ie: If the Vet is higher than the RAFed toons the Vet will not receive the exp bonus. I believe all will receive the exp bonus for quests while you are grouped when you turn in the quests while next to each other.

3. Aside from 4x shamans what other 4 of the same class combo would be fastest at leveling to 60 via quests and instances? Ive started 4 locks and in 55 minutes they are sitting at lvl 10. Looking for advice on what 2nd combo should be? Hunters would be my guess but mages seem pretty fast as well.

Answer: This is personal preference. However, individuals tend to run with at least one toon that can Rez. Believe it helps if you have a toon that can rez! I run two mages and have been doing a lot of running lately

Hope this helps. If there are anymore questions just ask or search the forums. There are half a dozen RAF threads