I was thinking about converting a trunk in my car into a small darkroom to process paper negatives as well as load them on the go. Since I would be carrying chemicals in bottles with no way to cool them, one questions arrises. Do the chemicals for processing BW paper need to be 68F for proper developing? or can they be 85F? I am thinking, since paper develops to competion in about 60-90 seconds, does higher temps affect anything else, contrast maybe?