I just heard about an online curricula that may be of interest:
Compass Learning through www.time4learning.com

Here are some things I've overhear about it -
they split it up into "upper school" and "lower school" - but if you need access to both, they have done it before.

Parents choose the level and get access to material one grade above and one grade below.

They have a risk free trial. 2 weeks.

If you like it you may save money by paying for a
full-year of access for $150.

It has what appears to be an extensive math curriculum up through algebra. They also partner with eIMACS for two of their courses.

For the $20 it covers language arts, math, science and social
studies.

Not sure if your are looking for a full curriculum, but when I read about this, I though of you.

Best Wishes,
Trinity

Coaching available, at SchoolSuccessSolutions.com