Hi Andy
If you have got it to primmer and are happy with the finish I think you could probally finish it.
You  could get the blue mixed in spray cans aprox 25.00 ea  I know labour rates are high, but you masking  it 500.00 may be a bit much.    What do you think??   imo you should do it your self   

Practice on card board first and save some $.  The     Satisfaction will be all yours        Howzat