Need complete engine gasket set

[Jvan]

My mechanic says that my engine is leaking oil from many places and doesn't want to start replacing gaskets fearing that parts that are 21 years old (207,000 miles) may break when removed, leading to major replacement costs. I'm willing to take the risk rather than just letting the car sit so I need to locate a complete gasket kit (don't need the head gaskets but they are included) and I might as well replace the timing belt/water pump at the same time. So if anyone has a vendor to recommend , please let me know. As another thought, I should replace the water/vacuum hoses w/silicon hoses so if you have a source for them or can tell me the sizes of the vacuum lines so I can buy by bulk, please send that info.