fab
You can do the modular course full-time and ab-initio, that is not unique to the integrated programme. I would never recommend an integrated course to anyone, but I would recommend full-time groundschool to most people if they can do it (not just because I teach it, I will be teaching much less soon!). That should help your technical English and general grammar. Some of the questions are worded in a confusing way, so grammar is important.