If you really need manual submission then the best option is to hire a freelancer to make the post for you so that when he finish he will send all the links to your post before sending payment. So in my own view make a post in this forum in the "buy sell or trade" forum and pick a provider to do this task for you. some directory service submission could claim to submit articles manually at the end they use software.
In my opinion manual submission is more effective in comparison of software and its only about 100 submission just do it your self its not taking more time around 1 hour.
Manual directory Submission is best as compare to automated because automated submission considered as a spam. I know about a company which provides directory Submission services. oscreative is the company. So try this. Thanks,