Sometimes the most difficult part of planning to teach is determining the pace.
The normal answer from many teaching in Texas is to use the Scope in Sequence provided by TEKS Resource. The problem is that does not really work for every group of students. It is crucial for the students that every TEKS (standard) is covered in Algebra 1 because they are tested at the end of the year and must pass the test to graduate (in 3 more years). This year, my classes have many students who can learn all of the material, just not at that pace. I am faced with decisions about what if really important and what can they get by without learning this year. This is my greatest challenge at the moment.