Stay together. Push out your lane hard, roam mid and put some damage on turret or take it and then rotate back to bot lane. Rinse and repeat until mid turret is down.
Then make sure to secure drag if it is up (order for drag or mid turret can change). After that rotate top get that outer turret but don't just hand another turret to them for it, make sure lanes are pushing properly.
Basically, the worst thing I see is team who rotate mid at the wrong time and get no damage on mid turret yet give up a ton on our bot lane turret. Just because you got their turret it does not mean we hand them ours. You need to keep the lead.