If I had to do high school all over again, I'd take 3 or 4 years of Latin. I had a great Latin teacher (Miss Houk) but I didn't think about taking more than the two years that I did managed to pass. Anyway, if you're interested, you can download ebooks of the latest edition (2010) of the Liturgia Horarum in four volumes, 11.50 euros each which comes to about $14.23 per. It's also available in Italian. No English yet. Check it out.