These 3 may be done in succession, eliminating some of the time that would be lost in repositioning the antennas after each integration. Note that in estimating accurately the time available one must know the times lost in starting up an integration and the time lost in an antenna move. In that case, there would be just 1.3 minutes for each pointing in the outer most uv cell. That would correspond to about one 60 second integration at each antenna position. This source size, just twice the beamwidth, is about the maximum that could be done.
Bigger sources require more tracks on more days.
In order to minimize time lost in repositioning the antennas, there needs to be a separate specification of the integration times and the number of repeated integrations that can be made at the same pointing position. In any case, both the integration start-up and the antenna repositioning times must be kept as short as possible.