Yes, you should consider how you are going to implement the strategic plan prior to actually doing strategic planning. In ESSENCE you should be "planning to plan". There are a number of questions you can USE to help you in planning the implementation.

How will the plan be communicated?
Who should be involved in the planning process so as to build ownership of it during implementation?
How will we measure PROGRESS towards organizational goals?
How will we communicate progress?
What role will all PLAYERS (i.e. executives, managers, others) play in implementation?

Yes, you should consider how you are going to implement the strategic plan prior to actually doing strategic planning. In essence you should be "planning to plan". There are a number of questions you can use to help you in planning the implementation.

How will the plan be communicated?
Who should be involved in the planning process so as to build ownership of it during implementation?
How will we measure progress towards organizational goals?
How will we communicate progress?
What role will all players (i.e. executives, managers, others) play in implementation?