As usual, it depends what do you want to do? Do you feel like you would need to swing or shoot a weapon at an enemy? During combat, your followers aren't independent and use your action too, with the group function, it would also use the mixed action if you want them to take two actions at once.
On a sidenote, you know since you need to complete all the deeds, to increase your legend (it repeats again for the next legend rating need to to do again another set of deeds), maybe the first long term deed might need to be of a lower scale/ambition at first.