Thanks all - some really good advice there.
From what's been posted I'm hearing that I should be realistic about the amount of time I can dedicate to study, set realistic deadlines and by following the course as suggested coupled with the brush up it should be ok.
One other thing I was considering was doing it over the same time period but in 4 sittings instead of 2. Forgetting the logistical issues and expense surrounding extra brush up courses, does anyone have any thoughts on that?
llen