I agree, starting with FLL3 would be a great place to start. It builds on what a student would have learned in FLL 1 and 2. The only thing that is suggested by Jesse Wise is to purchase the accompanying CD that goes with FLL 1 and 2, this will help your student put into memory all definitions of parts of speech, and list of prepositions, pronouns, state of being verbs, helping verbs, articles, and conjunctions. Memorizing these things was an important part of the previous years.
HTH