In an effort to avoid summer crowds on a Friday, we plan on arriving at Castelo de Sao Jorge at 9 AM and tour the Castle. Following that, we thought we would visit in the following order:
São Vicente de Fora/Monastery of St. Vincent Outside the Walls
Miradouro de Santa Luzia
Roman Theater Museum
If my map reading skills are correct, these appear to be reasonably close (we love walking and prefer it to public transit where feasible) and mostly downhill.
Could someone advise me if this is a doable walk?