03 Sebring, 2.7 water pump

I know I am going to shoot myself in the foot for this but I am considering changing the water pump and timing chain and oil pump myself:runaround: . Is there anything special that I would need for this? The Chiltons manual says there are some special tools needed. of course they don't tell you what they are or for what reason they are needed. The mechanic tells me it is a two day process for him and it is no fun. Labor alone is going to be around $900:nono: . OUCH! :banghead: If I don't have to do this I don't want to. Any help would be greatly appreciated.