A friend that hasn't brewed before has a kit that is a "traditional European bock". I read through the ingredients, and it's an extract kit with some steeping grains. It does not include yeast, but suggests you go get some "beer yeast" and ferment it at 68-72.

I'm no expert, but know that Bocks are supposed to be lagers.
I've done a few ales now, but don't have
good way to do temperature control for lagering. I am contemplating two options to help him out:
- Use some US-05 (or other clean ale yeast like Kolsch) and ferment it in the low 60s F.
- Use a W-34/70 lager yeast - I'm confident I can consistently keep it in the mid-high 50s F with a huge bucket of water, lots of towels and frozen water bottles.
Any thoughts? Thanks.
"Always do sober what you said you'd do drunk. That will teach you to keep your mouth shut."
-Ernest Hemmingway