Well, I'm sure the old rack was sagging under all the weight, so it is good she got a new one. Of course, the new rack will require some upkeep, but I'm sure her husband can take care of that.
Just one question. (2) 20L are 60" total length and the stand looks like a 48" for the 55 and 75. How are you going to put multiple 20L's on the top? Maybe I'm missing something. Just skip the 20L's and put another 55 up there