Cheers my friend!
Our fastest autos, which are usually ready before the 70 day mark, are:
Fast Bud #2 Auto, + Speed Auto, Cream Mandarine Auto, Mohan Ram Auto, Killer Kush Auto and Speed Devil #2 Auto.
But you can harvest within less than 70 days also with Green Poison Auto, Red Poison Auto, SAD Auto, Cream Caramel Auto, Sweet Trainwreck Auto, Sweet Skunk Auto and many others. Unless you like to harvest them very mature, in that case choose one from the first list.
Just avoid the ones that lean to the sativa side and you'll be fine.
Do you live in Europe?
All the best and sweet smokes!
tommy