100EL isn't my favorite way to go with reading philosophically. But, it works. My dd learned from it at 4.5.
Many libraries have it, so you could check it out & try it.
Reading Made Easy is a lot more parent work to prep, I think. Other than that, I think it's laid out in a similar manner to 100EL but doesn't use the phonetic writing that 100EL does.
You can check them both out at homeschoolreviews.com