when should I expect traffic?

Exactly 3 weeks 4 days 8 hours and 15 minutes. Then you will see traffic.

To be honest, I would have expected to see traffic after 6 months, but you are in a very competitive niche and may not be doing things as well as you could. We can only really help with your URL.

Well... "Link building" is a little vague, you're going to need an entirely different sub-plan for this alone. To start with, nobody is going to be able to give you a proper of idea of when you will see traffic, just keep working on your SEO (what I presume you want your main source of traffic to be) and the traffic will come in trickles - provided your link building is quality and your keywords are appropriate, etc.

More interesting to me, however, is your "8 new articles" per month part of your plan. Forex is an incredibly competitive market and people are ALWAYS looking for new strategies/research and information to try and get ahead. If your content is really strong and you're able to pump out that much of it, I would switch gears and put most of your efforts into getting traffic from social media.

https://www.facebook.com/DailyFX is one of the top forex pages on FB and they get a considerable amount of shares for many blog posts/articles.

This whole social thing is just my two cents though, to get back on topic a little... Maybe if you share more of your ideas on your "link building" plan we can give you more useful information

^ I lol'd hard at this.

At the end of first month you expect the gradually progress in traffic on your site....i have suggestion for you don't forget to add blog in your website or make a separate blog for your website to make high quality back links for your site.you can do guest blogging as well to promote your blog and ultimately your website.

I don't know if there is a specific answer to this. But based in my experience, you can experience traffic increase from weeks to months. Some can have few weeks or few months. Sometimes, it can go as far as 6 or more months. The thing is that if you are doing things right, you should see an increase in traffic. If not, you should review your SEO, do research, and make necessary changes. See what works and stick on it.

From my experience I would say an average of around 3-6 weeks is a good estimate before organic traffic comes in in drips and drabs.

It is not an exact science. Submit your sitemap and verify your website with Webmaster tools etc as soon as you can

Around 7:30

Approximately you will start to acquire traffic after 3-4 months, for the search engine traffic will be depend upon the keywords search volume and competitions, if your target keywords under the high competition then that will take time. Second thing backlinks matter, what kind of backlinks are going to create what quality of websites. You can start drive traffic fast from eminent social media sites, join communities/groups and make good discussion.