I have a DaKine pack. Don't know the model but it seems perfect for what you want. It has a hydration hose sleeve into the shoulder strap with a hook inside the pack to hang the bladder. The pack I have did not come with the bladder. The cool thing is the quick, cable ski attachment system that mounts the skis at a slight angle vertically on the pack. There are also good straps on the side if you prefer to mount skis in an A-frame. I have used the side straps to attach my boots with the skis mounted with the cable. Plenty of room for skins, shovel probe & extras. It also has a special goggle pocket. The pack skis great & has comfortable shoulder straps & waist belt.
I also looked at Camelbacks, but the quality of this one seemed better.
JF