My answers for a big EU Loco:
1. B
2. B
3. B
In practice, on real world two engine go arounds I have seen the autopilot engaged early to reduce workload as often as I've flown or seen them flown manually.
The other (biz) jet type I've flown advocates putting the AP in asap. It also had a rather basic autopilot and level acceleration was done in ALT HLD before climbing in SPD at Vfto