I use a paddle, but when mine was changed I kept the same pressure plate and also had the extended release fork making it much lighter. If it's the same pressure plate then it should feel the same other than the paddle biting quicker, they want to be quite on off rather than having a gentle ease on feel when starting off in 1st.
As for all the other points that is unbelievable, carelessly leaving oil pipes so loose that it's spraying around under your bonnet is an absolute joke and your well within your right to complain and if you want to take it further try to claim some money back for your time putting it right. Not sure how that will pan out though.
Sorry to hear the problems, hope you have caught everything now!