with a larger cam you run the chance of putting the stock springs into coil bind if there is alot of lift, wearing down pushrods quicker, and its just a harder upkeep. you will probably want to upgrade the entire valvetrain to accomodate if you go with a somewhat aggressive cam. jeremy would be the person to talk to as i believe he has software to design a cam to a certain goal. for driveability, id say go no lower then 112lsa, at the MOST, 114 would be more appropriate. if you were gunna spray, id say 226/230 .575/.575 114lsa off the top of my head.