This is easy to solve,get the garage to do it. Their prices are good, you get a stamp in the book and piece of mind that it's been done properly. If you fancy self servicing it, have a go, but you'll need to be fairly mechanically competent to do it. I've just started to service my 03 roadster myself,it's 9 years old, and at the bottom of the depreciation curve,so not too worried about a stamp in the book.It only needed a oil service, so I did it in an afternoon with a change of oil & filter, brake fluid and hoses, coolant and anti roll bar bushes.BUT, I have access to a full car lift and air tools to help get wheels off etc. Would I do all this on my driveway with axle stands,nah,too much of a faff, I'd get a garage to do it.At the end of the day it's your car, you know how competent a mechanic you are and how much a fully stamped up book means to you.Z's are not complicated to maintain or work on,so your choice.