Welcome to beyond blue.
Getting tired. But I wanted to respond to your post as well. Here goes...
I am not sure of what the entry requirements are for Masters, so the only "advice" I can give is to do a load that you are capable to doing. There is nothing worse that pushing yourself and failing and missing out. I did the later without depression, but my marks were still good enough to get into a Masters in Applied Science (Computing) degree.
Last year I was doing a BTh part time (working full time) and I had cut down from 2 to 1 subject because of the prospect of failing. I spoke with one of the lecturers and they said my decision made sense. So do what you can do...
So in the '90s I did a Computing degree fulltime, found a job and then did a Masters part time. I could have done it full time, but I had a job, and job prospects them were somewhat grim.
I think the best bet would be to have a chat with student services or one of the counsellors at Uni or any advice, as they would know the ins and outs in relation to the suggestions from romantic_thi3f, and would help you weigh up the pros and cons of each.
There are no right or wrong decisions here as long as you are comfortable with that decision.
Like romantic_thi3f, didn't answer your question, but hope something I said will help,