A large meander shouldn't take more than a couple of hours for that size quilt. I personally like to meander block by block with something else in the alternate blocks, but that is more time consuming. I've done an allover and while I found it harder as it was bigger quilt, it turned out well. When I first started FMQ, my upper back hurt, but I used a child's backpack with 2 pounds of weight. I don't need it anymore. I'd say the chubby part of the pattern in my meandering is as wide as my 2 thumbs together. Think puzzle pieces in a child's puzzle.
Music: I do best with Rod Stewart or Bon Jovi. Not exactly relaxing, but it works for me.