Great! I couldn't get the wife to mow the lawn in the about 35 years we have been married.
Anyway, the Murmur is a good pack, all in all. I use a 5 piece Nightlight pad (about 2" thick in the sleeves, it's been around since Gossamer Gear introduced the old G5.)
I am about 44" at the chest and have a good inch or two of adjustment left. I use the thicker pad with heavier-than-designed-for loads (23# last trip) and to sipport the pack on my back. Without the pad I have plenty of extra strap...very comfortable across portages/hiking.
The minor issue there *might* be that the straps need to also adjust torso size. They are mounted fairly low, but I need a 18-1/2" torso length. This is right at the border between a large and medium. GG doesn't offer that specific size (16-24" one size only.) So adding a thicker pad, 2" to 2-1/2", rather than the standard 3/4" Sitlite takes up about 4". Pulling the straps to position lets it fit like a glove with the extra thickness with *just enough* strap for a good hand hold while tightening. This also means the weight is sitting on my hips where it belongs.
The third pocket is similar to the Miniposa third pocket in the first runs of those. High on the right side, it holds daily snacks, TP, AM drops/UV water treatment, trail trash, and a bandana. The Murmur dos not have this. It has one for stove, windscreen, one for water bottles and the front pouch for rain gear, tarp, and fleece. I really miss the third pouch(or fourth if you count the front pocket) just to keep stuff at hand during the day. I have a belt pouch I will need to add to make up for it or sew one it as on the Miniposa. I use two .6L Gatoraid bottles for water...wide tops just fit the Steripen.
Again, it fits me pretty well at 5'9", 175# (180 in winter.) Dropping the pad or modding the shoulder straps might be needed if you are a LOT different, like 21" torso length, and 48" chest.