I will have to agree with JCL on this. DYI is a good way to learn and get your hand dirty but you have to choose the type of work you start with. OP i don't know what your technical capability is but I personally think oil filter housing gasket and CCV is very time consuming and not something I would recommend for someone who's technical capability stops at changing tires (again i'm not saying that's all you are capable of doing). I recently went through the same dilemma, i've done brakes, valve cover gasket, door carrier, expansion tank etc.. these are all simple. I have also helped a friend change the CCV on his 530 so i'm well aware of the type of work involved. Considering that the X5 is my wife's daily and needs it for work everyday, I didn't want to gamble taking it apart and not being able to finish the job that weekend for whatever reason (wrong part number, broken bolt, etc..) So i choose to take it to the Indy and have him do it (sucks having to pay the price i paid) but safer than wife missing couple of days of work. So if this is your daily driver, think twice before you tackle the project, make sure you have a back-up plan in case you don't finish it in time for use the following day or two. Good luck..

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2001 BMW X5 3.0 Sold
2008 VW jetta S
2006 Lexus Rx400h