Here are a few photos. As you can see, to extend the lifters you would have to cut a couple of slits in the lid of the pack to allow the lifters to come out.
The lifters are the opposite of a lot of other packs iv seen, they are actually inside the body of the pack rather than on the outside.
Definetly doable to extend the lifters, but your going to have to be pretty crafty with a sewing machine.
As for the suspension, you can kind of see how it adjusts in this picture. It looks very very minimal (which it kind of is) but man does it work well. Perfect amount of flex and comfort in a day pack IMO. Awsome flexibility (which I like in a daypack). Yet still comfortable with reasonable sized loads
Any other questions let me know. Sorry for taking so long to get them up its been busy.