The city of Bangor would buy body cameras for its police officers, provide more outreach to the homeless and invest more than $4 million in its infrastructure under a budget proposal that the city council is now considering for next year. The proposal would raise the city’s municipal and school spending to $108.8 million, up from $100.8 million this year, due largely to increases in wages, insurance and retirement costs, according to a copy of the proposed budget available on the city website. [Higher special education costs could have Bangor taxpayers paying more for schools] The proposed spending would be offset by just $50 million in revenue from sources other than property taxes, including revenue sharing from the state and excise taxes from vehicle registrations. That leaves about $58.7 million that would have to be covered by local taxpayers under the proposal.