I don't agree with that article or method that the OP posted. I am a firm believer in long heat cycles to harden the camshaft. If oil temperature is an issue, then we all should be running electric motors, not internal combustion engines that generate heat by design. Assemble the engine with assembly lube, add some lithium grease to the oil pump gears so the oil pressure is maxed out immediately from the added suction created by the lithium grease being pulled in. The lithium grease will not plug any oil galleries. Use the oil of your choice, some swear by break-in oil, but conventional oil is fine. Break-in the camshaft per the old school method, and drive the vehicle like you will drive drive it normally, and change the oil after an hour or two of driving. The engine will thank you not coddling it. Change the oil again at 500 miles. Don't be afraid to rev it up, go up hills, down hills, etc. Varying the rpms and driving conditions is what properly seats everything, and long heats cycles properly harden the metals that need to be hardened.
I also don't agree with priming the engine prior to start-up. If you know you assembled the engine with assembly lube, all of the bearings and other wear surfaces are properly lubricated for this short period of start-up, and then the oil pump takes over the oiling process.
Think of how many engines have sat for long periods of time, and we get in, pump the the gas pedal a few times and start cranking the engine. Sometimes it starts right up, other times it takes more cranking. But the engine doesn't die from this.
