Question: What parts do I need to order / tools need to own to replace the timing chain on an M104.980?

I'm looking the EPC and I see the following:



003 997 19 94 is the IWIS chain I need, but does it come with the master link 000 997 22 98? Do I need to order this?

Also, I have been seeing pictures of master links using circlips:



Is this what I will get if I order 000 997 22 98? Or do I get this:



If the latter, suggestions on a tool for crimping the chain?

I believe the timing chain on my M104.980 is stretched. The motor has 200k miles on it and I was initially set off to do a head gasket job. With the valve cover off, I set the motor to TDC by aligning the 4mm holes on the cams with the surface of the head. Further down the line of removing the cylinder head, I noticed the harmonic balancer was not at TDC where the front sensor is indicating. It was ahead maybe 5 or 7 degrees.

Here is where I am now, I figure it's super easy to replace the chain right now:

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