This article is a description of all the aspects of TPACK. There are a few interesting points made in this about the importance of flexibility when considering the TPACK model. I also liked the BNIE activity structure.
This site contains the essential conditions listed by ISTE to effectively leverage technology for learning. I don't think that all of this information will go into a plan, but I do think they are all necessary for a school to have in order to have the most effective use of tech.
This is a wiki that explains the steps involved with creating a tech plan. I think this does a pretty good job of explaining many of the items that are important while creating a plan. It explains creating goals, assessing the current state, implementation, timelines, budgets, and monitoring/assessing plans.
This website explains more about the teamwork aspect of creating a technology plan and provides a scoring guide and other templates to help pace and guide the creation of a tech plan.