I have tried to ripen fruit several times under articfical light, but the temperature is 20-22 c and the results were terrible, very insipid not sweet at all, maybe because the fruit started forming outsdie before being brought in, but I didn't think it was a great idea for me to do again.
Another way to 'extend the season' would be to get early, mid and late varities so you have a longer season overall as well to Jon's point to start them as early as possible, I think these things will produce more fruits over a longer overall period that will take a few years to really produce well if you're just stocking up.