I know two wedding photographers who used the hasselblad system for wedding back in the day. I talked with then for a very long time about it. Both did the exact same thing and it went like this.

500cm, grip/flash bracket, fully manual flash, 50 80 150 lens, 45 prism.

They would never shoot tight and would always crop afterwords.

150 during the cermony

50 for most everything else

Flash set for a per determined distance and say 4m at 1/125 at f8 and just shoot away.