Let us know how it works out. Break in is done for a reason, but its one of those things that people follow religiously but I don't know if anyone has ever done a side by side comparison of methods? I wish I had the money to find out.
If you were to ask my to come up with my own break in instructions my intuition would say to keep the motor at a good running temp during break in, and go easy as the motor is still tight for a few tanks. Slowly work your way up to full throttle.
I don't like saying "if you don't follow break in exactly" or "4 tanks isnt enough" because I honestly don't know enough to make that call. I'm no engineer! But it does seem good to break-in for a longer time, than a shorter time.