In this case, i'd start by fully optimizing the site for SEO, and start building backlinks. Once you have spent time doing this and see organic traffic, i'd start to use paid traffic sources (mostly ppc - bing and possibly 7search), if you let the organic traffic run long enough you should start to see the keywords that are bringing traffic to your site which will make the keyword research easier and cheaper for the paid traffic.
Create a lot of buzz about the website and why not build a list while you are at it. Design a capture page that allows your audience to be put on a waiting list and will be notified by email when the site launches. Create a blog for updates and email your list updates as well. Create 4 emails to mail your list to get excited about the launch. The final email in the series should be sent out on launch day and the first email should be sent out 1 week to 2 weeks in advance to launch. Social Media Should be utilized to bring in optins to your email list. Create valuable content on a blog with a strong call to action to get on the wait list for your website and share it on all social media networks. You can also drive paid targeted traffic to the capture page as well.
Maybe can try make your website mobile friendly. then promote your website using buzzcity or mobfox. it is more cheaper. now a days people like to use smartphone for browsing
I personally agree with all those who have suggested guest blogging. By providing quality content to other websites you basically putting your content in front of the eyeballs of clients that are interested in your niche. You don't have to aim for many sites. Just research a couple, 3 or 4 good sites will be enough. What is important here is to provide the highest quality content that you can. If the quality of your content is not up to the blog's owner standard then it will get rejected.
Hi guys, I want to update you by telling you that I have launched the website live today. You can view it via this link - http://botanickivrh.hr I'm going to use all of your tips and tricks for guiding traffic to my site. Really appreciate every post here, thank you for helping me! :- )