BMW Repair: 94 e34 525, minor leaks, professional mechanic

Question
I am curious how many hours it would take a mechanic to change a "Lower Left of Radiator to Thermostat" hose. My car was just recently overheating; and this was determined to be this was determined to be the cause.  It had a pin hole leak that was under short distance would leave just enough to lose coolant.  Also, there were a few other minor leaks that they were looking into; one was reported to be a "pump to bottle" hose leak on PS; another was coming from the lower left of oil pan (oil level sensor seal? not sure).  I'm just trying to get an idea on the possible damage.  I would greatly appreciate your input and assistance.  Your knowledge and resource is invaluable, thanks

Answer
I am not a professional mechanic in the sense that I have a book to price what this would be.  I don't think a radiator hose should take more than 30 minutes actual time.  Not sure about the other two either, other than most hoses are not to time consuming.  The sensor I cannot help with at all.  Sorry.