The HMG 2400 and up are sized for your torso.
The 2400 and the 3400 have the same circumference, but different heights.
I'd go with a 2400. Remember, you can always add pockets. If you want more support, add the framesheet. Using the 150D, it would be bombproof. I find the 50D with the 150D bottom plenty strong. A little rougher sewn than Zimmerbuilt but good quality.
Really the one shown in a another recent thread looks to be what you may be asking for, minus the mesh of course.
I find the collar on the 4400 a little annoying. I don't want to hassle with getting it shortened at this point. It's not that annoying.
I found a REI shopping bag fits well inside the pack. I can just pack the bag and pull it in and out of the pack. A stuff bag would work the same, but the open top is nice and makes it easier to organize. I just need a lighter Cuben version.