Finally managed to setup a DNN website. You can view it at http://b2blink.advisor.pl (unfortunately only in Polish). Still have problems with setting up rss feeds, which are always empty and i have no idea why.
I also did some iis gardening 😉 and it turned out that setting the worker thread limit too high isn’t such a good idea after all. It causes spawning new threads and it takes ages to load application.