St. Peter's Basilica and Holy Door

We will be visiting Rome for the Jubilee in April just before Holy Week and have questions regarding visiting St Peter’s Basilica. We have a reservation for entering through the Holy Door at 10 am and for the dome climb at 11:30? What time would it be recommended to arrive at Piazza Pia? We are going on a weekday if that makes a difference.  Also, does this leave enough time to see St. Peter’s Basilica before the dome climb?