Using templates certainly speeds things up and it makes perfect sense to get hold of a template if you don't have the time to generate a plan from scratch. The benefits of using a template are huge because you can have a lot of information you never even thought of already sitting in the template ready to use or customize to suit your particular project.
When choosing a lesson template, be sure to use one that isn't overly complex or confusing. Additionally, choose a font that's readable as well. By choosing these little steps to make your plan template more legible, you will save yourself a lot of confusion in the long run.