If you PM me an e-mail address, I can e-mail you a curriculum guide for the EPGY OE ELA and Algebra; I don't have one for K-7 math. EPGY does offer a placement test for proper placement in K-7 and the ELA, but you don't want to enroll if your DS is beyond the curriculum already. Have you had DS take the AoPS diagnostic to see if he's ready to start there for pre-algebra or algebra? If so, he's beyond EPGY OE.
If you decide to go the EPGY route, I can tell you people in my learning group frequently supplement with Singapore math word problems if they are homeschooling. EPGY ELA is basically grammar, mechanics, and writing, so you'll have to provide reading/literature instruction.
