Cam break in during cold weather?

I'm going to assume it's in a warm garage to start with? If so I would get absolutely everything ready to fire off in the warm garage push it out and fire it off just like you would any other day. as in any other day breaking a motoor. Youknow get it started as quick as possible get up to over two Grand as quick as possible and hold it there. I always have a timing light hooked up so once I get it running I can dial in the timing since it's almost all in I run it up to about 33-34. And cranking the idle screw till you get it to hold the RPMs you want. Then I usually give it a little tap up to 2500 every minute or so gently up and gently down to two grand. the cooler air should help the initial temperature spike a little bit which it usually does for me but comes back down quickly. I can't tell you how many threads I've seen what people have problems with it overheating at initial startup or that's what they're worried about but this one's a first for me too cold? I thought he was our enemy? Trust me at two grand to 2500 for 20 minutes plus it's going to get plenty warm..
If it's outside yeah I'm like throw a couple electric heaters under there with a blanket for an hour or so just so it's kind of a room temperature kind of thing.