I don't have an answer for you, but I am going through the same thing, but homeschooling has done wonders for my child since I pulled her out of public school.  I just diagnosed her.  Anyway, I hope you find the best curriculum for it, and I hope the same for myself as I search for the best for my daughter.  I heard great things about sonlight. :)

From my own experience, there isn't just one program that works.  You will need to do a combination of a few different programs.  In language arts I highly recommend using an Orton-Gillingham based program.  There are lots on the market now.  Susan Barton has a homeschooling program, there is S.P.I.R.E., Recipe for Reading are a good start in your research.  You will need to do Orton-Gillingham lessons at least one hour every day.  Then for math, I really like Saxon Math.  They have a great homeschooling program.  It is very systematic, cumulative and structured.  They also have an on-line test you can take to place your child in the correct level.  Those are your two most important subjects right now.  The science and social studies can be extremely hands-on by going to the beach, aquariums, museums, nature hikes and centers, missions, etc.  
Good luck to you and have fun.  For more information regarding Orton-Gillingham, click on the link below: