find and analyze relevant hashtags with hashtagify.me and ritetag, you can generate traffic with 0 followers, if you get your hashtags right and your tweet can be found via twitter search
ritetag is a really great tool, it tells you exactly what to do when you write your tweet on the fly, see:
in short: you want to include not more than two relevant hashtags (one blue and one green, no red), include a link, upload an image, (use emojis) and mind retweetability, don't write too long tweets, the ideal tweet length is between 70 and 100 characters
i'm getting a significant part of my traffic from twitter search and not the followers
i have a pretty much dormant twitter account with 140k followers, if you take a look at it, it's like an everyday account with 80% real followers, but in fact, i haven't really did anything with it in the last 2 years, all the followers came from back then, mostly from follow-unfollow method, once it was above 210k, now if you were to purchase a retweet on this account just by looking at the numbers and the followers, more than likely you wouldn't get the expected results, so my point is that you can't really know what you're buying until you see the results, when it's already too late
i think with only a single account without followers, you won't really be able to do real "damage", you may want to use a hundred accs or so, purchase a few domains, proxies, a bot and you're good to go, follow targeted people, write your tweets keeping in mind the pointers i mentioned above, this way you won't rely on others and it will yield better results than purchasing rewteets from accounts you don't know and don't really know what to expect