manage strategy tasks - Create Tasks - How long options.

Summary:

Could anyone explain the difference between How Long Will the Strategy Wait Until It Executes This Task and How Long Will the Strategy Wait After It Executes This Task?

Content (required):

I have a strategy set up like the below:

Im assuming the following.

From when the strategy is assigned, after 34 days the first 'task' has to be completed.

From when the strategy is assigned, after 41 days the second 'task' has to be completed.

From when the strategy is assigned, after 50 days the third 'tasks' has to be completed, etc, etc

Is it advisable to have the above (set up as