I currently have a 4-door '98 ford escort, and was thinking about how much stuff i could really pack into it (bug-out situation also) without the weight of the items affecting handling and safe driving and gas milage. Does anyone know of a weight range i should try to stay within for a car of this type? I am currently carrying in the trunk the following items equaling to maybe 40-50 lbs:

1. paper towels
2. 16 gauge jumper cables
3. 1 gallon antifreeze / coolant
4. 1 quart oil
5. armour all window cleaner
6. armour all dash/interior cleaner
7. flashlight
8. manufacturers jack/spare tire/ lug wrench
9. 2 orange rain ponchos for weather or emergency signalling(no real weight there)
10. tire pressure gauge (again no real weight)

does anyone have any suggestions as to items i may be missing, or any advice on the main question?

thanx in advance