adjust hinges?
You might take an observation of how the hinges react when the door is open and while applying an upward force. See if the hinge pivots themselves are loose, or if the fastening bolts/nuts are loose. Hopefully the hinge mounting area on either the door or the body is not rusted out.
There might be some adjustment in the fastening hardware. In other words, if you loosen the nuts holding the hinge assy to the body, both top and bottom hinges, the door might be able to be rotated up slightly to compensate for your 1/4" sag. Then just tighten down the nuts and re-adj the striker.
If you need to replace the hinges due to wear, maybe getting two of your friends to help out will not require the complete removal of the door. Open the door and while they are holding it up, take the hinges off and replace, maybe one at a time is best. This way you would not need to worry about disconnecting the electrical stuff and so forth/
2Med