A importent thing, is to really investigate the need for such a mobile kitchen. If the red cross or other organisation already have such plans and equipment, than there really isn't a need. If the redcross has limited resources for a similair product, than you might look in to a coorperation with them to a certain point. This prevents people from working against each other and done properly also more efficient.

However keeping such thing private and very local however, will generally make them faster to react, but not as efficient in the long term.

i don't know about Ohio, but in my country you might be able to get subsidy