Well Tropfrog made a good point on choosing the other branch as leader, it has a slightly movement already. That's an option.
I advise you to look some online pictures of ficuses in nature and bonsais to seek inspiration, choose a bonsai style you like and that fits the species.
I personally like the little "snake like" growth on them, I mean, not a exagerated Moyogi (but some people like it), I like them a little tilted too, with a umbrella like top... Hokidachi suits amazingly for ficus too, and it's very natural...
But again, that's what I like, you should take your time, seek inspiration and plan your tree...
I love how the ficus grows like it wants on nature, they don't care what you think, some times the tree has another plans... ahahah