Getting Ready for Highschool Homeschool

DJ will be in 9th grade next year, and it has been on my mind forever now.  Below are the links I will be using, and some saving for further high school studies. Since I don't want to mess up his high school years, I will for the first time be buying some expensive curriculum to be sure he meets the proper requirements to get his credits.  He has done awesome with CK12 pre-algebra this year, but for Algebra, and higher I want him to have Math U See.  It is a bit expensive, but it is worth it, because I can use it for Caitlin as well.  We will use CK12 for American History, at least part of it that they offer, and possibly for Physics later on.  I have saved a Physical Education course, but have not found an appropriate Health or Foreign Language yet.  I will add those when I find what I want.

http://store.mathusee.com/catalog/secondary-math/algebra-1/algebra-1.html

http://www.christianbook.com/learning-language-literature-american-3rd-edition/greg-strayer/9781929683338/pd/683338?event=1016LLATL|433175|102656

http://shop.apologia.com/9-marine-biology

http://www.ushistory.org/us/

http://www.ck12.org/history/

http://www.hippocampus.org/HippoCampus/Algebra%20%26%20Geometry;jsessionid=DFB97ABDC0AFBB2BEC527FE5C55B9FBC

http://www.hoagiesgifted.org/online_hs.htm#health