Do you think LP needs break-in to sound its best?

Audiozen, did you mention the tolerable temperature? The light vinyl will have a great chance to have unplayable warps that would look even more like bumps.
Other than that store all of your vinyls in the dark place in upright position.

the record will become M- after it played the first time.

I use shoe-shine flannel cloth to wipe a record with a-bit pressure before playing weather it's out of sealed box or already played. It worms up record and makes sound incredibly smooth. Obviously no shoe shine compound is being placed on the cloth:-)