I was debating this with my parents and I couldn't stand commuting for three hours every day. For the past seven years ive commuted 2 hours a day and I just can't bump that up to 3... Good luck!
I'm commuting from Greenwich, should take me about an hour in total if I'm lucky! On top of that I'll be travelling down to Greenwich from the North east every week to stay with my boyfriend in order to commute to Surrey haha. My course is postgrad part time so only one day a week but it's still a lot of travelling.