No, not worth it. Autos go for 50-80 days, a regular or fem seed can finish in 80+. Indicas on average about 100, sativas 120. But regs and fems yield so much more under the same conditions.
Get the idea of 'finishing quickly' out of your head. If you do this early on you will become a better grower quicker. The more important question is, how can I yield more? It's all about yield, not finishing quickly. You could do a dozen autos in my main flower room and in 60 days you might have a 1-1 1/2 lbs. While in 100 days with just 6 plants I can do almost 3 lbs. You tell me which is better?
15-24 ozs in 60 days or 42-50 ozs in 100 days? Just a crude example/assumption but it makes my point. Forget about time and deal with yields.