My ds is doing both long course ICT and business studies and I have to say they are both a nightmare with regards to getting good marks. Depends on the boards your school does but we have had major problems with course work in ICT with it all needing to be redone as the teachers disagreed about the marking scheme and then the exam board moderating down all the coursework marks so every child lost a grade.
Business studies is appealing to them with all the interest in the apprentice, but again appears to be difficult to do well in. This could of course just be my ds and his very horizontal attitude
, but the marks for the school overall don't look great and he's usually pretty able.
I would look at your schools previous results in the subjects and check the boards.
However our view when faced with a similar choice was to choose things he enjoyed as already doing plenty of exams-but he would choose differently if we had our time again