textbook suggestions

I am a high school teacher, looking to re-introduce Computer Science to my school. I have 12 - 14 students , in grade 11 and 12 signed up for this new class next September. It would likely have a Grade 11 course designation. I have a few questions.
1. Which textbook would you recommend? Is there anyone currently teaching high school students using a text book?
2. How long would you expect Grade 11's and 12's to take to finish your recommended text? We have approx 90 days of 75 minutes classes.
3. Should I consider teaching another language if I were to then teach Grade 12 Computer Science in the next year with the same group of students? i.e. can I use Alice for 2 semesters worth of classes?

Any other tips, suggestions would be appreciated.

Thanks