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I found some tools that make draining the radiator less miserable: Thexton THE485 Petcock Socket Set - about $15, and there are some others out there for a similar price, but metal instead of plastic.

If yours are holding up well, that's great! I replaced the PCV hoses in my 99 9-3 with silicone, and they swelled up within a month, and then kept sliding off the PCB nipple. Standard rubber hoses...

Silicone swells in the presence of petroleum oils, so not a good choice. Use Standard vacuum tubing from the auto parts store. Most of the vacuum lines are hard plastic, however. You can buy those...