You could, but it's better to do it using the door shell with the tool. Standard tool in a collision shop and works better on some doors than others. If you use a jack and wood, cut a channel in the wood block so the door hem sits in it, similar to an aluminum Jackpal. Among the alignment tools available, here is another one. A design can be made quickly for a one time use instead of purchasing one: http://www.autobodytoolmart.com/cham...r-p-11508.aspx
The jamb hinge bolts are not impossible to access, and they make a door hinge wrench. Or one can easily be made after heating to bend it. I'd just loosen the hinge bolts to adjust the door.