The thing that shocked me was that once they had paid out their overheads and expenses the two owners were only making around £1 a hour!!
I'm not sure if it's improved as I don't speak to my ex anymore but I expect it'd get better over time.
I would say that breaking even was a pretty good start. This raises a good point for the OP though. Do you have the cash to see you through to profitability? You'll be spending money on rent, utilities, staff, equipment, capital and interest in debt etc and will need enough of a surplus to see you through until you build up a decent level of turnover.
Do you have a home mortgage to pay, kids to feed etc?
Cafes are ten a penny. They're always cropping up and closing as the competition is fierce due to such low barriers to entry.
What will your USP be? What part of the market are you aiming at?
What's the footfall like near your potential premises (not many will be bothered about driving to a cafe, unless your a road side cafe but again that's down to the market you are targeting.)
Are you going to fight out with other cafes in the same area doing the same thing or have you identified a gap in the market?
Are you willing to work long hours and have hardly any time off?
How will you market the business?
What business structure will you use? Sole trader, limited company, partnership?
How will you retain customers?