Aerospace3,
Ex-BGS grad here - all this will be explained to you on the brush-ups - the Mod 1 course will set you up nicely by the time you come to sit Mod 2. You must though have booked your exam sittings BEFORE going to Bristol - I've known guys not do this until they've got down there and sometimes it's been too late. Largely depends on where you want to sit the exams as some venues get booked up quicker than others.
If you can't wait 'till you get down to Cheddar, give Noush or Jackie a ring on (01934) 744944 and they'll bend over backwards to help you out (or so I'm told

)
HW