Only tips to prevent the suspension from Twitter, don't follow 1000 accounts daily. Probably you can follow max. 60-70 accounts at once, after that big chance to your account will be locked. after a couple of locks suspension coming.
Also, it is not right way if you want real followers, because of follow4follow will give you 90% of automated accounts(which use a strategy like yours), and for sure and they are not too real.