You may only have one or two chances to present your case. Take your opportunity seriously. This will be your most expensive cost, but hard data is compelling. You may find that officials have no idea what exposures are and are working from estimates from industry numbers. Usually no one is adding the cumulative totals from all the radiofrequency sources, but that is what your body is responding to.
Visual impacts are very important.
Most people aren't aware how much cell towers can create visual blight. Take pictures and blow them up. Blow up pictures of neighborhood children who would be exposed. Get a petition drive going and if possible, acquire a city tax assessors' map and highlight the houses where petition signers live.