I don't think you will need to roll your fenders with that setup. That depends on how low you go with your coilovers. I've got a set of BC's to put on the car but I'm planning to stay near stock height. Just waiting to burn off my 225/45's and get some 225/40's.
dont use a bat. I did that and it came out terrible. Im not sure what the going rate is. But you shouldnt need to do much rolling for this setup as stated above. good luck