You could lager if you want. I think it would help smooth out the beer early and you could probably drink it sooner, although I'd look at lagering it for 4-6 weeks, if you can. On the other hand, you'll drop out a lot of yeast so carbonation will occur at a slower rate. You may be happier bottling after 2-3 weeks and then after the bottles have carbonated you can stick them in the garage to lager over the winter, as long as the bottles won't freeze.