I can confirm that people farm and get luckier with big luck. I can even farm pinks with little luck. Big luck and little luck gives extra luck on both pocket legends and star legends.

As for the one mil, farming napalms or something that costs alot should get you to 1 mil quick. Farm vanities, and there is a vanity guide (i would give link but im on mobile ) Good luck !

~Jugernuget