seeds take a good 4 or so weeks to develop, so it might be a bit too late to try and get some beans from this grow..
it's never too late to clone, it just might take longer if it's heavily flowering ime..
g/l on saving the strain, it's one i wouldn't mind having myself..
oh yeah, you can always try and reveg it after you harvest it.. simply leave about 1/3 of the green on the plant, and put it back under 20 hours of light, and it a good bit you should start to see new vegetive growth on it.. might come in all funky at first as revegged plants are known to do this, but it'll turn out ok..