I definitely agree it's hard to say that one option is better than the other. Both are necessary to be successful here. However in the very beginning I would spend much more of my time on commenting l. I will still post so that if people come to my page and check it they can choose to follow me if they find my material interesting.

The blog page as you say become your brand so Ita important that when people visit your blog that they get a very good overview of what you are all about