100 Easy Lessons help!!!

We are a CAtholic Hs'ing family of 6. Currently 4 are schooling.. my 6.5 yr old is not picking up on letter recognition. We cant move forward.. blah.. The 5 yr old has it down packed.. We are using Seton- love it, he's just not ready for the phonics-- just not grasping it well when it comes to association, retention and recognition., I am thinking of using 100 easy lessons.. he's very good with scripting and memorization-- its the visual right now that he's having trouble making the associations.. anyone use this program before and whats your expeience been with it..? Thanks ..Yvonne