How hard is to do the timing if you have the tools?

[fmugur]

I know, but I am replacing the Vanos, chains, guides, tensioners and so on myself. I was thinking how much trickier is to do the timing vs. just replacing all these parts. I tempting to take it to the mechanic but if it's doable I would try it.
Here is a good DIY:
DIY: Timing Chain Guide & Timing Chain Replacement

BTW, my engine is on an engine stand, not that will make a big difference...