5DIII AF AI SERVO - bride walking towards you

Any suggestions of best AF settings for bride/groom walking towards you scenario?

Often of course there is low light. Always tempting to to use continuous shutter but is AF able to work inbetween shots?

Is it worth using more than one AF point in this scenario - eg a cluster of 4?

possible lens used are 70-200 2.8 IS, 50 1.2, 85 1.2, 35 1.4

Your experience most welcome

Thanks