If the seat has been shaved, then it will be lower than standard. So you have to ask yourself if you want to be up about 1/2 inch (guessing) with a standard seat or more like a full inch with the tall seat? At 6-0 you could probably get away with just keeping the shaved seat.....so it's all up to you. What do you want?
As for bars....CR Hi bend are a popular size. They are about 3.75 inches tall which are considerably taller than stock. Pastrana makes a freestyle bend that is 4.75 inches tall. I'm running some Deegan bars that are 4.90 inches tall. Just knowing what my friends prefer, I would suggest a CR Hi bar. Protaper, Renthal and others should offer this bend.
Micah