Hand-washing machine washable clothes?

There is 14 inches of snow on the ground, the plows just went by leaving a mountain of snow behind the parking lot, and our car isn't going anywhere, including the laundromat for a while. We both have work Monday (we walk to work, so no it doesn't matter that the car is stuck), but we need to wash our work clothes, which we normally do on the weekend. They are all machine-washable, but I will need to hand-wash them this weekend. When I wash them at the laundromat, I use a half cup of baking soda per load (I am allergic to detergents, and the baking soda works just fine). Since I will be hand-washing them in the bathtub, how much baking soda will I need to use, and how should I wash them? Should I be just as gentle as with our regularly hand washed clothes, or can I be a little rougher ringing them out so they will dry faster? Also, do I need to find a flat surface to dry a week worth of clothes on, or can I hang them to dry since they're machine washable? Also, is their any way to keep them from stretching due to air drying? I am very petite and even the smallest sizes I can find hang on me to the point they look a few sizes to big, even after shrinking them in the dryer. With hand washing, I'm afraid they will not be professional looking at all because they will not shrink at all and will be baggy on me, any ideas for getting them to dry as "small" as possible?