Conventional wisdom is that you should make your Steam store page live as soon as possible. That gives you more time to accumulate wishlists and followers.
You will get some traffic just by being on Steam. My page got about 200 visits per day and averaged about 3 wishlists per day. Not impressive numbers but they added up over time.
Thanks for the advice. I'm working on it. I already sent the store page for review. Steam support is still checking. I hope it won't take too much time. Have you already released your game? How is it going? Is it difficult to promote it?