Within PLL/ILL, there’s copywork and dictation for spelling; early composition exercises and gentle intro to grammar concepts. I don’t recall there being phonics instruction for spelling rules, so keep that in mind. If he needs that teaching to sound out words that he is misspelling, you’ll have to work that in. ABC’s and ALL Their Tricks is a resource book with all the spelling rules in it if you need a resource book without it being a whole new curriculum.
Mine read the Pathway’s without using the workbooks; they were just their early readers that they started oral narrations with. That’s another thing-make sure you continue, or begin, oral narrations.