There is no reason to go to extravagant measures when running in new speakers. When I get new speakers I follow the REL subwoofer break in procedure which is not really that severe or time consuming. It worked perfectly for my REL subs and speakers too.
Find some music that has deep bass beats and sustained notes.
Play loudly for two straight hours.
Then play moderately loud for 12 straight hours.
Finished, now enjoy.
My REL subwoofers did increase in output over the next several months but not by much. The break in process works and if it works for subwoofers it should easily work for speakers and it does.
You can do as you wish of course but I cannot validate your proposed method. Also as REL mentions you should not use pink or white noise. Bass beats work best along with some sustained notes. Find the title Atoms for Peace, perfect for the process.